All Exams >
Class 6 >
6 Months Preparation for Class 6 (CBSE) >
All Questions
All questions of Computer Science for Class 6 Exam
The physical components of the computer are known as- a)Software
- b)Program
- c)Hardware
- d)Both A and C
Correct answer is option 'C'. Can you explain this answer?
The physical components of the computer are known as
a)
Software
b)
Program
c)
Hardware
d)
Both A and C
|
Ashutosh Verma answered |
Hardware refers to the physical components of a computer system. These components are tangible and can be seen and touched. They are responsible for the input, processing, storage, and output of data in a computer system. Some examples of computer hardware include the central processing unit (CPU), memory (RAM), hard drive, motherboard, keyboard, mouse, monitor, and printer.
Hardware plays a crucial role in the functioning of a computer system. Without the necessary hardware components, a computer would not be able to perform any tasks. The various hardware components work together to execute instructions and process data.
The importance of hardware in a computer system can be understood by looking at the different functions performed by each component:
1. Central Processing Unit (CPU): The CPU is the brain of the computer system. It performs all the calculations and executes instructions. It consists of the control unit, arithmetic logic unit, and registers.
2. Memory (RAM): RAM stands for Random Access Memory. It is the temporary storage space used by the computer to store data that needs to be accessed quickly. The more RAM a computer has, the faster it will be able to perform tasks.
3. Hard Drive: The hard drive is the permanent storage space of a computer system. It stores all the data, including the operating system, software applications, and user files.
4. Motherboard: The motherboard is the main circuit board of the computer system. It provides the electrical connections for all the other hardware components to communicate with each other.
5. Input and Output Devices: Input devices, such as the keyboard and mouse, are used to provide data and instructions to the computer. Output devices, such as the monitor and printer, display or produce the results of the computer's processing.
6. Other Components: Other hardware components include the power supply, which provides electricity to the computer, and the cooling system, which prevents the computer from overheating.
In conclusion, hardware refers to the physical components of a computer system. It includes the CPU, memory, hard drive, motherboard, input and output devices, and other components. These components work together to perform various functions and enable the computer to process data and perform tasks.
Hardware plays a crucial role in the functioning of a computer system. Without the necessary hardware components, a computer would not be able to perform any tasks. The various hardware components work together to execute instructions and process data.
The importance of hardware in a computer system can be understood by looking at the different functions performed by each component:
1. Central Processing Unit (CPU): The CPU is the brain of the computer system. It performs all the calculations and executes instructions. It consists of the control unit, arithmetic logic unit, and registers.
2. Memory (RAM): RAM stands for Random Access Memory. It is the temporary storage space used by the computer to store data that needs to be accessed quickly. The more RAM a computer has, the faster it will be able to perform tasks.
3. Hard Drive: The hard drive is the permanent storage space of a computer system. It stores all the data, including the operating system, software applications, and user files.
4. Motherboard: The motherboard is the main circuit board of the computer system. It provides the electrical connections for all the other hardware components to communicate with each other.
5. Input and Output Devices: Input devices, such as the keyboard and mouse, are used to provide data and instructions to the computer. Output devices, such as the monitor and printer, display or produce the results of the computer's processing.
6. Other Components: Other hardware components include the power supply, which provides electricity to the computer, and the cooling system, which prevents the computer from overheating.
In conclusion, hardware refers to the physical components of a computer system. It includes the CPU, memory, hard drive, motherboard, input and output devices, and other components. These components work together to perform various functions and enable the computer to process data and perform tasks.
It is the collection of raw facts that is un organized- a)Instructions
- b)Information
- c)Data
- d)Processing
Correct answer is option 'C'. Can you explain this answer?
It is the collection of raw facts that is un organized
a)
Instructions
b)
Information
c)
Data
d)
Processing
|
EduRev Class 6 answered |
Data is the raw fact that is unprocessed and un organized. It includes words, numbers, images or sounds. On the basis of the raw data collected, Information can be generation by manipulating and processing the data.
All the Deleted files go to?- a)My Computer
- b)Network
- c)Recycle bin
- d)All of above
Correct answer is option 'C'. Can you explain this answer?
All the Deleted files go to?
a)
My Computer
b)
Network
c)
Recycle bin
d)
All of above
|
Preethi Dasgupta answered |
Recycle Bin: The Destination for Deleted Files
The correct answer is option 'C': Recycle bin. When files are deleted from a computer or any other storage device, they are not immediately permanently erased from the system. Instead, they are sent to the recycle bin, which serves as a temporary holding place for deleted files. Let's delve into the details to understand why the recycle bin is the correct answer.
1. What is the Recycle Bin?
- The recycle bin is a virtual folder located on the desktop of a computer or any other storage device.
- Its purpose is to store deleted files temporarily before they are permanently removed from the system.
- It acts as a safety net, allowing users to recover accidentally deleted files.
2. How does the Recycle Bin work?
- When a file is deleted, it is moved to the recycle bin instead of being immediately erased.
- The file retains its original location, name, and other properties.
- The recycle bin acts as a hidden folder, storing the deleted files until it reaches its capacity or the user decides to empty it.
3. Recovering files from the Recycle Bin:
- If a user realizes that a file was mistakenly deleted, they can easily restore it from the recycle bin.
- To do so, they can either right-click on the file and select "Restore" or drag the file out of the recycle bin and drop it in its original location.
- The restored file will be returned to its previous state, including any folders it was originally stored in.
4. Emptying the Recycle Bin:
- When the recycle bin reaches its maximum capacity or when a user decides to permanently delete the files, they can empty the recycle bin.
- Once the recycle bin is emptied, the files are permanently removed from the system and cannot be easily recovered.
- It is essential to exercise caution when emptying the recycle bin to avoid losing any important files.
In conclusion, the correct answer to the question is option 'C': Recycle bin. It is the temporary destination for deleted files, allowing users to restore them if needed. However, it is important to note that the recycle bin has a capacity limit, and once it is reached or when the user empties it, the files are permanently deleted from the system.
The correct answer is option 'C': Recycle bin. When files are deleted from a computer or any other storage device, they are not immediately permanently erased from the system. Instead, they are sent to the recycle bin, which serves as a temporary holding place for deleted files. Let's delve into the details to understand why the recycle bin is the correct answer.
1. What is the Recycle Bin?
- The recycle bin is a virtual folder located on the desktop of a computer or any other storage device.
- Its purpose is to store deleted files temporarily before they are permanently removed from the system.
- It acts as a safety net, allowing users to recover accidentally deleted files.
2. How does the Recycle Bin work?
- When a file is deleted, it is moved to the recycle bin instead of being immediately erased.
- The file retains its original location, name, and other properties.
- The recycle bin acts as a hidden folder, storing the deleted files until it reaches its capacity or the user decides to empty it.
3. Recovering files from the Recycle Bin:
- If a user realizes that a file was mistakenly deleted, they can easily restore it from the recycle bin.
- To do so, they can either right-click on the file and select "Restore" or drag the file out of the recycle bin and drop it in its original location.
- The restored file will be returned to its previous state, including any folders it was originally stored in.
4. Emptying the Recycle Bin:
- When the recycle bin reaches its maximum capacity or when a user decides to permanently delete the files, they can empty the recycle bin.
- Once the recycle bin is emptied, the files are permanently removed from the system and cannot be easily recovered.
- It is essential to exercise caution when emptying the recycle bin to avoid losing any important files.
In conclusion, the correct answer to the question is option 'C': Recycle bin. It is the temporary destination for deleted files, allowing users to restore them if needed. However, it is important to note that the recycle bin has a capacity limit, and once it is reached or when the user empties it, the files are permanently deleted from the system.
The _________ is present at the top of the paint window.- a)Title Bar
- b)Status Bar
- c)Scroll Bar
- d)Task Bar
Correct answer is option 'A'. Can you explain this answer?
The _________ is present at the top of the paint window.
a)
Title Bar
b)
Status Bar
c)
Scroll Bar
d)
Task Bar
|
|
EduRev Class 6 answered |
The title bar is present at the top of the paint window.
The title bar is an important component of the paint window as it displays the name of the active document or application. It provides useful information and functionality for managing the window and its contents. Here are some key points about the title bar:
- Location: The title bar is located at the topmost part of the paint window, just below the menu bar.
- Title: The title bar displays the name of the active document or application. It helps users identify and differentiate between multiple open windows.
- Minimize, Maximize, and Close buttons: These buttons are typically located on the right side of the title bar. They allow users to minimize the window, maximize it to full screen, or close the window respectively.
- Draggable: The title bar also serves as a handle to move the window. Users can click and drag the title bar to reposition the window on the screen.
- Window management: Right-clicking on the title bar brings up a context menu with options to manipulate the window, such as resizing, moving, or closing it.
- Window controls: Some applications may include additional controls or icons on the title bar for specific functions related to the window or document.
Overall, the title bar is a crucial part of the paint window, providing both functional and visual elements for managing and interacting with the application.
The title bar is an important component of the paint window as it displays the name of the active document or application. It provides useful information and functionality for managing the window and its contents. Here are some key points about the title bar:
- Location: The title bar is located at the topmost part of the paint window, just below the menu bar.
- Title: The title bar displays the name of the active document or application. It helps users identify and differentiate between multiple open windows.
- Minimize, Maximize, and Close buttons: These buttons are typically located on the right side of the title bar. They allow users to minimize the window, maximize it to full screen, or close the window respectively.
- Draggable: The title bar also serves as a handle to move the window. Users can click and drag the title bar to reposition the window on the screen.
- Window management: Right-clicking on the title bar brings up a context menu with options to manipulate the window, such as resizing, moving, or closing it.
- Window controls: Some applications may include additional controls or icons on the title bar for specific functions related to the window or document.
Overall, the title bar is a crucial part of the paint window, providing both functional and visual elements for managing and interacting with the application.
Which type of memory is typically stored on chips located on the motherboard?- a)Flash drive
- b)CD
- c)Primary
- d)Secondary
Correct answer is option 'C'. Can you explain this answer?
a)
Flash drive
b)
CD
c)
Primary
d)
Secondary
|
Praveen Kumar answered |
Primary memory, also known as RAM (Random Access Memory), is stored on chips located on the motherboard. This type of memory is crucial for the computer's operation as it temporarily holds data that the CPU needs while performing tasks. Unlike secondary memory, which is used for long-term storage, primary memory is faster but volatile, meaning it loses data when the computer is turned off.
________ keys are used to move cursor in all directions- a)Arrow
- b)Special
- c)Function
- d)Numeric
Correct answer is option 'A'. Can you explain this answer?
________ keys are used to move cursor in all directions
a)
Arrow
b)
Special
c)
Function
d)
Numeric
|
Dr Manju Sen answered |
Explanation:
The correct answer is A: Arrow keys.
- Arrow keys are used to move the cursor in all directions (up, down, left, and right) on a keyboard.
- These keys are typically located in an inverted T shape on the bottom right corner of a standard keyboard.
- The up arrow key is used to move the cursor upwards, the down arrow key is used to move it downwards, the left arrow key is used to move it to the left, and the right arrow key is used to move it to the right.
- The arrow keys are commonly used in various applications and programs, including text editors, web browsers, and games.
- They provide a convenient way to navigate and make precise movements on a screen without using a mouse.
- The arrow keys are considered part of the alphanumeric keys on a keyboard and are often used in combination with other keys to perform specific functions or shortcuts.
- Some keyboards may also have additional arrow keys, such as diagonal arrows or dedicated navigation keys, which can provide even more control over cursor movement.
In conclusion, the arrow keys are used to move the cursor in all directions on a keyboard.
The correct answer is A: Arrow keys.
- Arrow keys are used to move the cursor in all directions (up, down, left, and right) on a keyboard.
- These keys are typically located in an inverted T shape on the bottom right corner of a standard keyboard.
- The up arrow key is used to move the cursor upwards, the down arrow key is used to move it downwards, the left arrow key is used to move it to the left, and the right arrow key is used to move it to the right.
- The arrow keys are commonly used in various applications and programs, including text editors, web browsers, and games.
- They provide a convenient way to navigate and make precise movements on a screen without using a mouse.
- The arrow keys are considered part of the alphanumeric keys on a keyboard and are often used in combination with other keys to perform specific functions or shortcuts.
- Some keyboards may also have additional arrow keys, such as diagonal arrows or dedicated navigation keys, which can provide even more control over cursor movement.
In conclusion, the arrow keys are used to move the cursor in all directions on a keyboard.
This printer makes use of laser technology for printing images and text on the paper- a)Inkjet Printers
- b)laser printer
- c)Dot- matrix printer
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
This printer makes use of laser technology for printing images and text on the paper
a)
Inkjet Printers
b)
laser printer
c)
Dot- matrix printer
d)
None of these
|
Shiksha Academy answered |
Inkjet printer is the mostly used printer. This type of printer uses laser technology that is sued to print text or imageson paper. This printer is most expensive and gives the best quality of print outs. The speed of this printer is measured in pages per minute (ppm).
Scroll Bar is used to move the screen. It is of _________ types- a)3
- b)2
- c)4
- d)5
Correct answer is option 'B'. Can you explain this answer?
Scroll Bar is used to move the screen. It is of _________ types
a)
3
b)
2
c)
4
d)
5
|
Shubham Gupta answered |
Scroll Bar Types
A scroll bar is a graphical user interface (GUI) element used to move the screen up and down or left and right. It is usually found on the right side or bottom of a window or webpage. There are two types of scroll bars:
1. Vertical Scroll Bar
A vertical scroll bar is used to move the screen up and down. It is found on the right side of a window or webpage. The scroll bar consists of a thumb, up arrow, down arrow, and track. Users can click on the up or down arrow to move the screen in the desired direction, or they can drag the thumb up or down the track to move the screen to a specific location.
2. Horizontal Scroll Bar
A horizontal scroll bar is used to move the screen left and right. It is found at the bottom of a window or webpage. The scroll bar consists of a thumb, left arrow, right arrow, and track. Users can click on the left or right arrow to move the screen in the desired direction, or they can drag the thumb left or right along the track to move the screen to a specific location.
Conclusion
Therefore, the correct answer to the question is option 'B' as there are only two types of scroll bars - vertical and horizontal.
A scroll bar is a graphical user interface (GUI) element used to move the screen up and down or left and right. It is usually found on the right side or bottom of a window or webpage. There are two types of scroll bars:
1. Vertical Scroll Bar
A vertical scroll bar is used to move the screen up and down. It is found on the right side of a window or webpage. The scroll bar consists of a thumb, up arrow, down arrow, and track. Users can click on the up or down arrow to move the screen in the desired direction, or they can drag the thumb up or down the track to move the screen to a specific location.
2. Horizontal Scroll Bar
A horizontal scroll bar is used to move the screen left and right. It is found at the bottom of a window or webpage. The scroll bar consists of a thumb, left arrow, right arrow, and track. Users can click on the left or right arrow to move the screen in the desired direction, or they can drag the thumb left or right along the track to move the screen to a specific location.
Conclusion
Therefore, the correct answer to the question is option 'B' as there are only two types of scroll bars - vertical and horizontal.
The first on the left of the Menu Bar is the _________ Button.- a)Paint
- b)Help
- c)Close
- d)Minimize
Correct answer is option 'A'. Can you explain this answer?
The first on the left of the Menu Bar is the _________ Button.
a)
Paint
b)
Help
c)
Close
d)
Minimize
|
Muskaan Chavan answered |
HTML
The Paint Button
Explanation:
The correct answer is option 'A', which is the Paint button. The Paint button is located on the left of the menu bar and is the first button in the menu bar. It is used to access the Paint application which is a simple graphics editing program that is included with Microsoft Windows.
The other options presented in the question are not correct. The Help button is usually represented by a question mark icon and is used to access help documentation for the application. The Close button is usually represented by an X icon and is used to close the active window. The Minimize button is usually represented by a minus icon and is used to minimize the active window to the taskbar.
In conclusion, the Paint button is the correct answer as it is the first button on the left of the menu bar and is used to access the Paint application.
The Paint Button
- Located on the left of the menu bar
- It is the first button in the menu bar
- Used to access the Paint application
Explanation:
The correct answer is option 'A', which is the Paint button. The Paint button is located on the left of the menu bar and is the first button in the menu bar. It is used to access the Paint application which is a simple graphics editing program that is included with Microsoft Windows.
The other options presented in the question are not correct. The Help button is usually represented by a question mark icon and is used to access help documentation for the application. The Close button is usually represented by an X icon and is used to close the active window. The Minimize button is usually represented by a minus icon and is used to minimize the active window to the taskbar.
In conclusion, the Paint button is the correct answer as it is the first button on the left of the menu bar and is used to access the Paint application.
Set of instructions is called__________________________.
- a)Application
- b)Hardware
- c)Program
- d)Software
Correct answer is option 'C'. Can you explain this answer?
Set of instructions is called__________________________.
a)
Application
b)
Hardware
c)
Program
d)
Software
|
|
Sarita Singh answered |
Correct option is C. Software Program
To open a file, we can double click on:- a)File itself
- b)Shortcut of file
- c)Both A and B
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
To open a file, we can double click on:
a)
File itself
b)
Shortcut of file
c)
Both A and B
d)
None of these
|
Freak Artworks answered |
To open a file, we can double click on:
A: File itself
B: Shortcut of file
C: Both A and B
D: None of these
The correct answer is C: Both A and B.
Explanation:
- When you double click on a file, whether it is the file itself or a shortcut of the file, it will open.
- The file can be a document, image, video, or any other type of file that your computer supports.
- A shortcut is a link to the original file, which allows you to access the file quickly without navigating to its location.
- Double clicking on the file or its shortcut triggers the default program associated with that file type, which opens the file for viewing, editing, or executing.
- This is a common and convenient way to open files on most operating systems, including Windows, macOS, and Linux.
- Double clicking on a file or its shortcut is a user-friendly method that eliminates the need for manual navigation and opening of files through the file explorer or command line.
- It provides a simple and intuitive way to access and open files on your computer.
In conclusion, to open a file, you can double click on either the file itself or its shortcut. This action triggers the default program associated with the file type and allows you to view, edit, or execute the file.
What does RAM stand for?- a)Random Access Memory
- b)Read Access Memory
- c)Random Application Memory
- d)Read Application Memory
Correct answer is option 'A'. Can you explain this answer?
a)
Random Access Memory
b)
Read Access Memory
c)
Random Application Memory
d)
Read Application Memory
|
|
Shiksha Academy answered |
RAM stands for Random Access Memory. It is the primary memory used by a computer to store data and instructions temporarily while the computer is running. A fascinating fact is that RAM is volatile, meaning it loses its contents when the power is turned off.
Data is a collection of facts from which ____ may be derived. - a)processing
- b)information
- c)procedure
- d)instruction
Correct answer is option 'B'. Can you explain this answer?
Data is a collection of facts from which ____ may be derived.
a)
processing
b)
information
c)
procedure
d)
instruction
|
Muskaan Choudhury answered |
Data and Information
Data is a collection of facts that can be in the form of numbers, words, measurements, or observations. These facts are raw and unorganized, lacking any specific meaning or context on their own. It is from this data that information can be derived.
Deriving Information
- Information is the result of processing and analyzing data to give it meaning and context. When data is processed, organized, and presented in a specific way, it becomes information.
- For example, if you have a list of numbers such as 10, 15, 20, 25, these are data points. By calculating the average of these numbers (which involves processing the data), you derive the information that the average is 18.
Processing Data
- Processing data involves various operations such as sorting, classifying, analyzing, and summarizing the data to extract meaningful insights.
- This processing step is crucial in turning raw data into usable information that can be used for decision-making, problem-solving, or gaining knowledge.
Significance of Information
- Information is valuable because it helps us understand the world around us, make informed choices, and communicate effectively. It provides context, relevance, and meaning to data.
- Without the processing of data to derive information, the raw data remains unstructured and lacks the ability to guide actions or decisions.
In conclusion, data is the raw material that is processed to derive information. Information is the meaningful output that can be used to gain insights, make decisions, and understand various phenomena.
Data is a collection of facts that can be in the form of numbers, words, measurements, or observations. These facts are raw and unorganized, lacking any specific meaning or context on their own. It is from this data that information can be derived.
Deriving Information
- Information is the result of processing and analyzing data to give it meaning and context. When data is processed, organized, and presented in a specific way, it becomes information.
- For example, if you have a list of numbers such as 10, 15, 20, 25, these are data points. By calculating the average of these numbers (which involves processing the data), you derive the information that the average is 18.
Processing Data
- Processing data involves various operations such as sorting, classifying, analyzing, and summarizing the data to extract meaningful insights.
- This processing step is crucial in turning raw data into usable information that can be used for decision-making, problem-solving, or gaining knowledge.
Significance of Information
- Information is valuable because it helps us understand the world around us, make informed choices, and communicate effectively. It provides context, relevance, and meaning to data.
- Without the processing of data to derive information, the raw data remains unstructured and lacks the ability to guide actions or decisions.
In conclusion, data is the raw material that is processed to derive information. Information is the meaningful output that can be used to gain insights, make decisions, and understand various phenomena.
The smallest dot that can be displayed is called a ___ - a)resolution
- b)pixels
- c)dotmatrix
- d)element
Correct answer is option 'B'. Can you explain this answer?
The smallest dot that can be displayed is called a ___
a)
resolution
b)
pixels
c)
dotmatrix
d)
element
|
|
Dr Manju Sen answered |
The smallest dot that can be displayed is called a "pixels".
Explanation:
To provide a detailed solution, we will break down the answer into headings and HTML bullet points:
Definition:
- Pixels are the smallest individual elements that make up a digital image or display.
- Each pixel is a tiny square or dot that contains a specific color value.
Display Technology:
- Pixels are used in various display technologies such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and LED (Light-Emitting Diode) displays.
- These technologies control the brightness and color of individual pixels to create images on screens.
Resolution:
- Resolution refers to the number of pixels that can be displayed on a screen.
- Higher resolution displays have more pixels, resulting in sharper and more detailed images.
- The resolution is typically expressed in terms of width and height, such as "1920x1080" or "4K" (3840x2160).
Pixel Density:
- Pixel density refers to the number of pixels per unit of area on a display.
- Higher pixel density displays have more pixels packed into a smaller area, resulting in a higher level of detail and clarity.
- Pixel density is measured in pixels per inch (PPI) or dots per inch (DPI).
Advancements:
- Over time, display technologies have advanced, allowing for higher pixel densities and smaller individual pixels.
- This advancement has led to improved image quality, sharper text, and more immersive viewing experiences.
Conclusion:
- In summary, the smallest dot that can be displayed is called a "pixel".
- Pixels are the building blocks of digital images and displays, and their size and density determine the quality and level of detail in the displayed content.
Explanation:
To provide a detailed solution, we will break down the answer into headings and HTML bullet points:
Definition:
- Pixels are the smallest individual elements that make up a digital image or display.
- Each pixel is a tiny square or dot that contains a specific color value.
Display Technology:
- Pixels are used in various display technologies such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and LED (Light-Emitting Diode) displays.
- These technologies control the brightness and color of individual pixels to create images on screens.
Resolution:
- Resolution refers to the number of pixels that can be displayed on a screen.
- Higher resolution displays have more pixels, resulting in sharper and more detailed images.
- The resolution is typically expressed in terms of width and height, such as "1920x1080" or "4K" (3840x2160).
Pixel Density:
- Pixel density refers to the number of pixels per unit of area on a display.
- Higher pixel density displays have more pixels packed into a smaller area, resulting in a higher level of detail and clarity.
- Pixel density is measured in pixels per inch (PPI) or dots per inch (DPI).
Advancements:
- Over time, display technologies have advanced, allowing for higher pixel densities and smaller individual pixels.
- This advancement has led to improved image quality, sharper text, and more immersive viewing experiences.
Conclusion:
- In summary, the smallest dot that can be displayed is called a "pixel".
- Pixels are the building blocks of digital images and displays, and their size and density determine the quality and level of detail in the displayed content.
Computer cannot work without________________- a)Word
- b)Excel
- c)Operating System
- d)Power Point
Correct answer is option 'C'. Can you explain this answer?
Computer cannot work without________________
a)
Word
b)
Excel
c)
Operating System
d)
Power Point
|
|
Sagnik Saha answered |
Without an Operating System, a computer cannot function properly. The Operating System (OS) is the most essential software that allows a computer to manage its resources and perform various tasks. It acts as an interface between the hardware and the software, enabling the user to interact with the computer and control its operations.
1. Definition and Function of an Operating System:
- The Operating System is a software program that manages computer hardware and software resources and provides common services for computer programs.
- It acts as an intermediary between the user and the computer hardware, allowing users to communicate with the computer and perform tasks efficiently.
2. Resource Management:
- The OS manages computer resources such as memory, processors, storage devices, and input/output devices, ensuring their efficient utilization.
- It allocates memory to different programs, schedules tasks to be executed by the processor, and controls the flow of data between different hardware components.
3. User Interface:
- The Operating System provides a user-friendly interface that allows users to interact with the computer.
- It provides graphical user interfaces (GUI) or command-line interfaces (CLI) through which users can access and control the computer's functions and applications.
4. File Management:
- The OS enables users to create, modify, and organize files and directories on storage devices.
- It provides file management systems that allow users to store, retrieve, and organize their data efficiently.
5. Device Drivers:
- The Operating System includes device drivers that enable the computer to communicate with various hardware devices such as printers, scanners, and network cards.
- These drivers act as intermediaries between the hardware devices and the OS, allowing them to work together seamlessly.
6. Security and Protection:
- The OS ensures the security and protection of the computer system and its data.
- It provides security features such as user authentication, access control, and encryption to safeguard the system from unauthorized access and protect sensitive information.
7. Multitasking and Multithreading:
- The Operating System allows multiple programs to run simultaneously, enabling multitasking.
- It also supports multithreading, which allows multiple threads within a program to execute concurrently, improving overall system performance.
In conclusion, the Operating System is a crucial component of a computer as it provides essential functionalities, manages resources, and enables users to interact with the computer. Without an OS, the computer would not be able to function and perform tasks efficiently.
1. Definition and Function of an Operating System:
- The Operating System is a software program that manages computer hardware and software resources and provides common services for computer programs.
- It acts as an intermediary between the user and the computer hardware, allowing users to communicate with the computer and perform tasks efficiently.
2. Resource Management:
- The OS manages computer resources such as memory, processors, storage devices, and input/output devices, ensuring their efficient utilization.
- It allocates memory to different programs, schedules tasks to be executed by the processor, and controls the flow of data between different hardware components.
3. User Interface:
- The Operating System provides a user-friendly interface that allows users to interact with the computer.
- It provides graphical user interfaces (GUI) or command-line interfaces (CLI) through which users can access and control the computer's functions and applications.
4. File Management:
- The OS enables users to create, modify, and organize files and directories on storage devices.
- It provides file management systems that allow users to store, retrieve, and organize their data efficiently.
5. Device Drivers:
- The Operating System includes device drivers that enable the computer to communicate with various hardware devices such as printers, scanners, and network cards.
- These drivers act as intermediaries between the hardware devices and the OS, allowing them to work together seamlessly.
6. Security and Protection:
- The OS ensures the security and protection of the computer system and its data.
- It provides security features such as user authentication, access control, and encryption to safeguard the system from unauthorized access and protect sensitive information.
7. Multitasking and Multithreading:
- The Operating System allows multiple programs to run simultaneously, enabling multitasking.
- It also supports multithreading, which allows multiple threads within a program to execute concurrently, improving overall system performance.
In conclusion, the Operating System is a crucial component of a computer as it provides essential functionalities, manages resources, and enables users to interact with the computer. Without an OS, the computer would not be able to function and perform tasks efficiently.
The data that is changing into the information is called as- a)Processing
- b)Input
- c)Output
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
The data that is changing into the information is called as
a)
Processing
b)
Input
c)
Output
d)
None of the above
|
|
EduRev Class 6 answered |
The data is feeded/ entered into the computer by making use of input devices. Then the data is been sent to the CPU for the processing process and with the help of the output devices the processed data is been displayed as the desired information. Processing means changing of the data into the information on the basis of the instructions provided. The processor inside the CPU perform the action of processing of data into the information.
Bar Code Reader Consist of _____________- a)Sensor
- b)Light
- c)Heat
- d)Magnetic
Correct answer is option 'A'. Can you explain this answer?
Bar Code Reader Consist of _____________
a)
Sensor
b)
Light
c)
Heat
d)
Magnetic
|
|
Dr Manju Sen answered |
Bar Code Reader Consist of:
There are several components that make up a bar code reader. These include:
Sensor:
- A sensor is an essential component of a bar code reader. It captures the reflected light from the bar code and converts it into an electrical signal.
Light:
- A bar code reader uses a light source to illuminate the bar code. The light is typically emitted as a red LED or laser beam.
Optics:
- Optics in a bar code reader help to focus the light onto the bar code and capture the reflected light. They consist of lenses and mirrors to ensure accurate reading.
Decoder:
- The decoder is responsible for interpreting the pattern of bars and spaces in the bar code and converting it into a readable format. It decodes the electrical signal from the sensor and translates it into alphanumeric characters.
Interface:
- Bar code readers are usually connected to a computer or other devices through an interface such as USB, Bluetooth, or RS-232. This allows the decoded information to be transmitted to the connected device.
Power Supply:
- Bar code readers require a power source to operate. They can be powered by batteries, USB ports, or AC adapters.
In conclusion, a bar code reader consists of a sensor, light source, optics, decoder, interface, and power supply. These components work together to capture and interpret bar code information.
There are several components that make up a bar code reader. These include:
Sensor:
- A sensor is an essential component of a bar code reader. It captures the reflected light from the bar code and converts it into an electrical signal.
Light:
- A bar code reader uses a light source to illuminate the bar code. The light is typically emitted as a red LED or laser beam.
Optics:
- Optics in a bar code reader help to focus the light onto the bar code and capture the reflected light. They consist of lenses and mirrors to ensure accurate reading.
Decoder:
- The decoder is responsible for interpreting the pattern of bars and spaces in the bar code and converting it into a readable format. It decodes the electrical signal from the sensor and translates it into alphanumeric characters.
Interface:
- Bar code readers are usually connected to a computer or other devices through an interface such as USB, Bluetooth, or RS-232. This allows the decoded information to be transmitted to the connected device.
Power Supply:
- Bar code readers require a power source to operate. They can be powered by batteries, USB ports, or AC adapters.
In conclusion, a bar code reader consists of a sensor, light source, optics, decoder, interface, and power supply. These components work together to capture and interpret bar code information.
Which of the following groups consist of only input devices? - a)Mouse, Keyboard, Scanner
- b)Mouse, Keyboard, Plotter
- c)Mouse, Keyboard, Printer
- d)Mouse, Keyboard, Monitor
Correct answer is option 'A'. Can you explain this answer?
Which of the following groups consist of only input devices?
a)
Mouse, Keyboard, Scanner
b)
Mouse, Keyboard, Plotter
c)
Mouse, Keyboard, Printer
d)
Mouse, Keyboard, Monitor
|
Puja Chopra answered |
Understanding Input Devices
Input devices are hardware components that allow users to input data and commands into a computer system. They are essential for user interaction with the computer.
Group Analysis
Let’s analyze the options provided to identify which group consists only of input devices:
Conclusion
Option A is the only group that consists solely of input devices: the mouse, keyboard, and scanner. Understanding the difference between input and output devices is crucial for grasping how computers function and how users interact with them.
Input devices are hardware components that allow users to input data and commands into a computer system. They are essential for user interaction with the computer.
Group Analysis
Let’s analyze the options provided to identify which group consists only of input devices:
- Option A: Mouse, Keyboard, Scanner
- Mouse: A pointing device used to interact with the computer's graphical interface.
- Keyboard: A device used to input text and commands.
- Scanner: A device that converts physical documents into digital format.
All three are input devices, making this option correct. - Option B: Mouse, Keyboard, Plotter
- Plotter: A device used for printing vector graphics, which is an output device.
This option is incorrect as it includes an output device. - Option C: Mouse, Keyboard, Printer
- Printer: A device that produces a hard copy of digital documents, hence an output device.
This option is also incorrect due to the inclusion of an output device. - Option D: Mouse, Keyboard, Monitor
- Monitor: A device that displays visual output from the computer.
This option is incorrect as it contains an output device as well.
Conclusion
Option A is the only group that consists solely of input devices: the mouse, keyboard, and scanner. Understanding the difference between input and output devices is crucial for grasping how computers function and how users interact with them.
Which memory stores permanent data in computer system?
- a)Primary Memory
- b)RAM
- c)ROM
- d)All of above
Correct answer is option 'C'. Can you explain this answer?
Which memory stores permanent data in computer system?
a)
Primary Memory
b)
RAM
c)
ROM
d)
All of above
|
Kiran Reddy answered |
Correct option is B. ROM (Read only Memory)
Which is a most powerful type of computer?- a)Mainframe Computer
- b)Mini Computer
- c)Micro Computer
- d)Super Computer
Correct answer is option 'D'. Can you explain this answer?
Which is a most powerful type of computer?
a)
Mainframe Computer
b)
Mini Computer
c)
Micro Computer
d)
Super Computer
|
|
Dr Manju Sen answered |
Most Powerful Type of Computer: Super Computer
- Mainframe Computer:
- Mainframe computers are large and powerful computers designed to handle extensive amounts of data processing and complex tasks.
- They are often used by large organizations and government agencies for critical applications such as banking, airline reservations, and scientific research.
- Mainframes are known for their reliability, scalability, and high performance.
- Mini Computer:
- Mini computers are smaller and less powerful than mainframes but more powerful than microcomputers.
- They are typically used for tasks that require moderate computing power, such as departmental databases and network servers.
- Mini computers offer a balance between performance and cost.
- Micro Computer:
- Microcomputers, also known as personal computers, are small and affordable computers designed for individual use.
- They are less powerful than mainframes and mini computers but are widely used for various applications, including office tasks, gaming, and internet browsing.
- Micro computers are the most common type of computer found in households and offices.
- Super Computer:
- Supercomputers are the most powerful and fastest computers available.
- They are designed to perform extremely complex calculations and process massive amounts of data in a short period.
- Supercomputers are used for tasks such as weather forecasting, scientific simulations, and advanced research.
- They typically consist of multiple processors and have exceptional computational capabilities.
Conclusion:
Among the given options, the most powerful type of computer is the Super Computer. Supercomputers are specifically designed to handle complex calculations and process large amounts of data quickly, making them ideal for demanding scientific and research applications.
- Mainframe Computer:
- Mainframe computers are large and powerful computers designed to handle extensive amounts of data processing and complex tasks.
- They are often used by large organizations and government agencies for critical applications such as banking, airline reservations, and scientific research.
- Mainframes are known for their reliability, scalability, and high performance.
- Mini Computer:
- Mini computers are smaller and less powerful than mainframes but more powerful than microcomputers.
- They are typically used for tasks that require moderate computing power, such as departmental databases and network servers.
- Mini computers offer a balance between performance and cost.
- Micro Computer:
- Microcomputers, also known as personal computers, are small and affordable computers designed for individual use.
- They are less powerful than mainframes and mini computers but are widely used for various applications, including office tasks, gaming, and internet browsing.
- Micro computers are the most common type of computer found in households and offices.
- Super Computer:
- Supercomputers are the most powerful and fastest computers available.
- They are designed to perform extremely complex calculations and process massive amounts of data in a short period.
- Supercomputers are used for tasks such as weather forecasting, scientific simulations, and advanced research.
- They typically consist of multiple processors and have exceptional computational capabilities.
Conclusion:
Among the given options, the most powerful type of computer is the Super Computer. Supercomputers are specifically designed to handle complex calculations and process large amounts of data quickly, making them ideal for demanding scientific and research applications.
Which part of window remains visible all the time when we use other applications?- a)Recycle bin
- b)Desktop
- c)Taskbar
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Which part of window remains visible all the time when we use other applications?
a)
Recycle bin
b)
Desktop
c)
Taskbar
d)
None of these
|
|
EduRev Class 6 answered |
Answer:
When using other applications on a Windows operating system, the part of the window that remains visible all the time is the taskbar. The taskbar is a horizontal bar that is typically located at the bottom of the screen, although it can be moved to different locations.
The taskbar serves several important functions and provides quick access to various features and applications. Here are some key points about the taskbar:
- The taskbar displays the Start button on the far left side, which allows users to access the Start menu and launch applications.
- In the middle of the taskbar, you will find icons for any open or pinned applications, allowing users to easily switch between them.
- The system tray, also known as the notification area, is located on the right side of the taskbar. It displays the time and date, as well as icons for system and program notifications.
- The taskbar also includes other useful features such as the search bar, which allows users to quickly search for files, applications, and settings.
Overall, the taskbar remains visible at all times, even when using other applications, making it a convenient and accessible feature of the Windows operating system.
When using other applications on a Windows operating system, the part of the window that remains visible all the time is the taskbar. The taskbar is a horizontal bar that is typically located at the bottom of the screen, although it can be moved to different locations.
The taskbar serves several important functions and provides quick access to various features and applications. Here are some key points about the taskbar:
- The taskbar displays the Start button on the far left side, which allows users to access the Start menu and launch applications.
- In the middle of the taskbar, you will find icons for any open or pinned applications, allowing users to easily switch between them.
- The system tray, also known as the notification area, is located on the right side of the taskbar. It displays the time and date, as well as icons for system and program notifications.
- The taskbar also includes other useful features such as the search bar, which allows users to quickly search for files, applications, and settings.
Overall, the taskbar remains visible at all times, even when using other applications, making it a convenient and accessible feature of the Windows operating system.
A trackball is manipulated by - a)Sound and sense
- b)Fingers and eyes
- c)Foot and chicks
- d)Palm and fingers
Correct answer is option 'D'. Can you explain this answer?
A trackball is manipulated by
a)
Sound and sense
b)
Fingers and eyes
c)
Foot and chicks
d)
Palm and fingers
|
Coachify answered |
Introduction:
A trackball is a pointing device that is used to move the cursor on a computer screen. It is manipulated by using specific body parts or tools.
Answer:
The correct answer is option D: Palm and fingers.
Explanation:
A trackball is manipulated by using the palm and fingers. Here is a detailed explanation of each body part's role:
1. Palm: The palm rests on the trackball and provides stability and support while manipulating the device.
2. Fingers: The fingers are used to roll or spin the trackball. By moving the fingers, the trackball rotates, and this movement is translated into cursor movement on the computer screen.
Advantages of using a trackball:
- Precise control: Trackballs offer precise cursor control, making them ideal for tasks that require accuracy, such as graphic design or gaming.
- Reduced wrist movement: Unlike a traditional mouse, trackballs require minimal wrist movement. This can help reduce the risk of repetitive strain injuries.
- Space-saving: Trackballs occupy less space than traditional mice since they do not require a surface to move on. This makes them useful for compact workspaces or laptop users.
In conclusion, a trackball is manipulated using the palm and fingers. This input method provides precise control and reduces the strain on the wrist.
A trackball is a pointing device that is used to move the cursor on a computer screen. It is manipulated by using specific body parts or tools.
Answer:
The correct answer is option D: Palm and fingers.
Explanation:
A trackball is manipulated by using the palm and fingers. Here is a detailed explanation of each body part's role:
1. Palm: The palm rests on the trackball and provides stability and support while manipulating the device.
2. Fingers: The fingers are used to roll or spin the trackball. By moving the fingers, the trackball rotates, and this movement is translated into cursor movement on the computer screen.
Advantages of using a trackball:
- Precise control: Trackballs offer precise cursor control, making them ideal for tasks that require accuracy, such as graphic design or gaming.
- Reduced wrist movement: Unlike a traditional mouse, trackballs require minimal wrist movement. This can help reduce the risk of repetitive strain injuries.
- Space-saving: Trackballs occupy less space than traditional mice since they do not require a surface to move on. This makes them useful for compact workspaces or laptop users.
In conclusion, a trackball is manipulated using the palm and fingers. This input method provides precise control and reduces the strain on the wrist.
The computers that is large in size and very expensive ___ - a)Mainframe
- b)Micro
- c)Laptop
- d)Mini
Correct answer is option 'A'. Can you explain this answer?
The computers that is large in size and very expensive ___
a)
Mainframe
b)
Micro
c)
Laptop
d)
Mini
|
Subset Academy answered |
Computers that are large in size and very expensive:
- Mainframe: Mainframe computers are large and powerful machines used by organizations for critical applications and handling massive amounts of data.
- Supercomputer: Supercomputers are extremely powerful and expensive computers used for complex scientific calculations and simulations.
- Server: Servers are large computers designed to provide services to multiple users or devices in a network.
- Workstation: Workstations are high-performance computers used for specialized tasks like graphic design, computer-aided design (CAD), and scientific research.
Among these options, the most suitable answer is Mainframe. Mainframe computers are known for their large size, high processing power, and high cost. They are typically used by large organizations for running critical applications and handling massive amounts of data. Mainframes are designed for reliability, security, and scalability, making them ideal for businesses with high computing needs.
Micro, laptop, and mini computers are smaller and less expensive compared to mainframes. While they have their own advantages and use cases, they do not fit the description of being large in size and very expensive.
____ enables the hardware to perform specific task. - a)Liverware
- b)Firmware
- c)Hardware
- d)Software
Correct answer is option 'D'. Can you explain this answer?
____ enables the hardware to perform specific task.
a)
Liverware
b)
Firmware
c)
Hardware
d)
Software
|
|
Subset Academy answered |
Answer:
The correct answer is D: Software. Here is a detailed explanation:
Software is a set of instructions or programs that enable the hardware to perform specific tasks. It acts as an intermediary between the user and the hardware, allowing the user to interact with the hardware and perform various operations.
Here are some key points to understand about software and its role in enabling hardware:
1. Definition: Software refers to the programs, data, and instructions that are stored on a computer or electronic device. It includes both the operating system and application software.
2. Types of Software: There are two main types of software:
- System Software: This includes the operating system and other utility programs that manage and control the computer hardware resources. Examples include Windows, macOS, and Linux.
- Application Software: This includes programs that perform specific tasks or provide specific functionality to the user. Examples include word processors, web browsers, and photo editing software.
3. Functionality: Software provides the necessary instructions and algorithms to make the hardware perform specific tasks. It controls and coordinates the various components of the hardware, such as the processor, memory, input/output devices, and storage.
4. Development: Software is developed by software engineers and programmers using programming languages and development tools. They write code that is then compiled or interpreted to create executable files that can be run on the hardware.
5. Updates and Maintenance: Software needs to be regularly updated and maintained to fix bugs, add new features, and improve performance. These updates are typically provided by the software developers or vendors to ensure that the software continues to work effectively with the hardware.
In conclusion, software plays a crucial role in enabling hardware to perform specific tasks. It provides the necessary instructions and functionality that allow users to interact with and utilize the capabilities of the hardware.
The correct answer is D: Software. Here is a detailed explanation:
Software is a set of instructions or programs that enable the hardware to perform specific tasks. It acts as an intermediary between the user and the hardware, allowing the user to interact with the hardware and perform various operations.
Here are some key points to understand about software and its role in enabling hardware:
1. Definition: Software refers to the programs, data, and instructions that are stored on a computer or electronic device. It includes both the operating system and application software.
2. Types of Software: There are two main types of software:
- System Software: This includes the operating system and other utility programs that manage and control the computer hardware resources. Examples include Windows, macOS, and Linux.
- Application Software: This includes programs that perform specific tasks or provide specific functionality to the user. Examples include word processors, web browsers, and photo editing software.
3. Functionality: Software provides the necessary instructions and algorithms to make the hardware perform specific tasks. It controls and coordinates the various components of the hardware, such as the processor, memory, input/output devices, and storage.
4. Development: Software is developed by software engineers and programmers using programming languages and development tools. They write code that is then compiled or interpreted to create executable files that can be run on the hardware.
5. Updates and Maintenance: Software needs to be regularly updated and maintained to fix bugs, add new features, and improve performance. These updates are typically provided by the software developers or vendors to ensure that the software continues to work effectively with the hardware.
In conclusion, software plays a crucial role in enabling hardware to perform specific tasks. It provides the necessary instructions and functionality that allow users to interact with and utilize the capabilities of the hardware.
This device looks similar to the xerox machine and used to enter pictures or photographs into the computer- a)Joystick
- b)Mouse
- c)Keyboard
- d)Scanner
Correct answer is option 'D'. Can you explain this answer?
This device looks similar to the xerox machine and used to enter pictures or photographs into the computer
a)
Joystick
b)
Mouse
c)
Keyboard
d)
Scanner
|
|
EduRev Class 6 answered |
Scanner is the input device that is used to enter the images, documents, photographs, graphs etc directly into the computer in the form of scanning them.. This device looks very similar to the manual xerox machine. It is connected to the computer with the cables. Flat bed scanners and hand held scanners are mostly used.
Which one is an example of Operating System:- a)Windows
- b)Android
- c)DOS
- d)All of above
Correct answer is option 'D'. Can you explain this answer?
Which one is an example of Operating System:
a)
Windows
b)
Android
c)
DOS
d)
All of above
|
|
Anisha Iyer answered |
Introduction:
An operating system is a software that manages computer hardware and software resources and provides common services for computer programs. It acts as an intermediary between the computer hardware and the user, allowing the user to interact with the computer and run various applications. There are several examples of operating systems available today. Let's discuss each option given and explain why the correct answer is option 'D', which states that all of the above options are examples of operating systems.
Explanation:
1. Windows:
- Windows is a widely used operating system developed by Microsoft.
- It is designed to run on personal computers, laptops, tablets, and servers.
- It provides a graphical user interface (GUI) that allows users to interact with the computer using windows, icons, menus, and pointers.
- Windows supports a wide range of software applications and hardware devices.
- It includes various features such as file management, multitasking, networking, and security.
2. Android:
- Android is an operating system primarily designed for mobile devices such as smartphones and tablets.
- It is developed by Google and is based on the Linux kernel.
- Android provides a customizable user interface and supports millions of applications available on the Google Play Store.
- It offers features like multi-touch gestures, notification system, and integration with Google services.
- Android is widely used in smartphones and has a large market share in the mobile operating system market.
3. DOS:
- DOS (Disk Operating System) is an operating system that was popular in the early days of personal computers.
- It was developed by Microsoft and used a command-line interface for interacting with the computer.
- DOS supported basic file management and ran on computers with limited hardware resources.
- While it is not widely used anymore, it played a significant role in the development of operating systems.
Conclusion:
All of the given options (Windows, Android, and DOS) are examples of operating systems. They are designed to manage computer hardware and software resources, provide user interfaces, and support various applications.
An operating system is a software that manages computer hardware and software resources and provides common services for computer programs. It acts as an intermediary between the computer hardware and the user, allowing the user to interact with the computer and run various applications. There are several examples of operating systems available today. Let's discuss each option given and explain why the correct answer is option 'D', which states that all of the above options are examples of operating systems.
Explanation:
1. Windows:
- Windows is a widely used operating system developed by Microsoft.
- It is designed to run on personal computers, laptops, tablets, and servers.
- It provides a graphical user interface (GUI) that allows users to interact with the computer using windows, icons, menus, and pointers.
- Windows supports a wide range of software applications and hardware devices.
- It includes various features such as file management, multitasking, networking, and security.
2. Android:
- Android is an operating system primarily designed for mobile devices such as smartphones and tablets.
- It is developed by Google and is based on the Linux kernel.
- Android provides a customizable user interface and supports millions of applications available on the Google Play Store.
- It offers features like multi-touch gestures, notification system, and integration with Google services.
- Android is widely used in smartphones and has a large market share in the mobile operating system market.
3. DOS:
- DOS (Disk Operating System) is an operating system that was popular in the early days of personal computers.
- It was developed by Microsoft and used a command-line interface for interacting with the computer.
- DOS supported basic file management and ran on computers with limited hardware resources.
- While it is not widely used anymore, it played a significant role in the development of operating systems.
Conclusion:
All of the given options (Windows, Android, and DOS) are examples of operating systems. They are designed to manage computer hardware and software resources, provide user interfaces, and support various applications.
_____________ is used to click photos in computer.- a)Headphone
- b)Web camera
- c)Speakers
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
_____________ is used to click photos in computer.
a)
Headphone
b)
Web camera
c)
Speakers
d)
None of these
|
|
Dr Manju Sen answered |
Answer:
The correct option to click photos on a computer is a web camera. Here is a detailed explanation:
Web Camera:
- A web camera, also known as a webcam, is a device that is used to capture photos and videos on a computer.
- It is a small camera that is usually attached to the top of a computer monitor or laptop screen.
- Web cameras are commonly used for video calls, conferences, and online meetings, but they can also be used to take photos.
- Most web cameras connect to the computer via a USB port and can be easily installed and configured.
- They come with software that allows users to control camera settings, capture photos, and record videos.
Other Options:
- Headphone: Headphones are audio devices used to listen to sound on a computer. They do not have the capability to click photos.
- Speakers: Speakers are also audio devices used to play sound on a computer. They do not have the capability to click photos.
- None of these: This option is incorrect because the correct option to click photos on a computer is a web camera.
Therefore, the correct option to click photos on a computer is a web camera.
The correct option to click photos on a computer is a web camera. Here is a detailed explanation:
Web Camera:
- A web camera, also known as a webcam, is a device that is used to capture photos and videos on a computer.
- It is a small camera that is usually attached to the top of a computer monitor or laptop screen.
- Web cameras are commonly used for video calls, conferences, and online meetings, but they can also be used to take photos.
- Most web cameras connect to the computer via a USB port and can be easily installed and configured.
- They come with software that allows users to control camera settings, capture photos, and record videos.
Other Options:
- Headphone: Headphones are audio devices used to listen to sound on a computer. They do not have the capability to click photos.
- Speakers: Speakers are also audio devices used to play sound on a computer. They do not have the capability to click photos.
- None of these: This option is incorrect because the correct option to click photos on a computer is a web camera.
Therefore, the correct option to click photos on a computer is a web camera.
__________ toolbar present in title bar by default. Its position can be changed either to below or above the ribbon.- a)Scroll Bar
- b)Status Bar
- c)Quick access bar
- d)All of these
Correct answer is option 'C'. Can you explain this answer?
__________ toolbar present in title bar by default. Its position can be changed either to below or above the ribbon.
a)
Scroll Bar
b)
Status Bar
c)
Quick access bar
d)
All of these
|
|
EduRev Class 6 answered |
Answer:
The toolbar present in the title bar by default is called the Quick Access Toolbar. It is a customizable toolbar that provides quick access to commonly used commands and functions in an application.
Position of the Quick Access Toolbar:
- The Quick Access Toolbar is located by default above the ribbon, which is the area that contains tabs and commands in a software application.
- However, the position of the Quick Access Toolbar can be changed according to user preferences.
- It can be moved either below the ribbon or above the ribbon.
Functionality of the Quick Access Toolbar:
- The Quick Access Toolbar allows users to customize and add their frequently used commands for easy and quick access.
- Users can add commands to the toolbar by right-clicking on a command and selecting "Add to Quick Access Toolbar".
- It provides a convenient way to perform common tasks without navigating through multiple menus or tabs.
- The Quick Access Toolbar is present across different applications and software, including Microsoft Office applications like Word, Excel, and PowerPoint.
Therefore, the correct answer is option C: Quick access bar.
The data or instructions that is feeded into the computer- a)Output
- b)Processing
- c)Input
- d)Storing
Correct answer is option 'C'. Can you explain this answer?
The data or instructions that is feeded into the computer
a)
Output
b)
Processing
c)
Input
d)
Storing
|
|
EduRev Class 6 answered |
The first step is the data or instruction/command is entered into the computer with the help of the input devices such as keyboard, mouse, scanner etc. This input devices are connected to the computer system.
This input device is also known as Digicam- a)Digital camera
- b)Mouse
- c)Camcorder
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
This input device is also known as Digicam
a)
Digital camera
b)
Mouse
c)
Camcorder
d)
None of these
|
|
EduRev Class 6 answered |
Digital camera is made used to enter photographs into the computer by way of capturing or storing them electronically/digitally. The use of photographic films are been avoided here. Hence the another name for digital camera is Digi cam.
The information printed on a paper is- a)Softcopy
- b)Photo copy
- c)Hard copy
- d)Xerox copy
Correct answer is option 'C'. Can you explain this answer?
The information printed on a paper is
a)
Softcopy
b)
Photo copy
c)
Hard copy
d)
Xerox copy
|
|
Shiksha Academy answered |
The information or the result that we get after processing of the entered data in computer, sometimes it happens that we want that information or result physically on the paper. So we can take the result/information on the paper and get it printed with the help of printer. We can get the printed copies/print outs in two forms that is colour /black and white prints. There are various types of printers that can be mostly used which are Laser printer, Ink jet printer, Dot-matrix printer etc.
Which is a part of CPU?- a)Control Unit
- b)Memory Unit
- c)ALU
- d)All of above
Correct answer is option 'D'. Can you explain this answer?
Which is a part of CPU?
a)
Control Unit
b)
Memory Unit
c)
ALU
d)
All of above
|
|
Ashutosh Verma answered |
Control Unit
- The control unit is a crucial part of the CPU that manages and coordinates all the operations within the computer.
- It directs the flow of data and instructions between the CPU, memory, and other input/output devices.
- The control unit decodes the instructions fetched from memory and executes them accordingly.
Memory Unit
- The memory unit stores data, instructions, and intermediate results during processing.
- It consists of RAM (Random Access Memory) and ROM (Read-Only Memory) which are essential for the functioning of the computer.
- RAM is volatile memory used for temporary storage, while ROM is non-volatile memory that stores essential system instructions.
ALU (Arithmetic Logic Unit)
- The ALU is responsible for performing arithmetic and logical operations within the CPU.
- It carries out tasks such as addition, subtraction, multiplication, division, and comparison operations.
- The ALU is a critical component for processing data and executing instructions.
All of the Above
- The CPU consists of the control unit, memory unit, and ALU, which work together to process data and execute instructions.
- Each component plays a vital role in the functioning of the CPU and overall computer system.
- Together, these parts form the core processing unit that drives the operations of the computer.
- The control unit is a crucial part of the CPU that manages and coordinates all the operations within the computer.
- It directs the flow of data and instructions between the CPU, memory, and other input/output devices.
- The control unit decodes the instructions fetched from memory and executes them accordingly.
Memory Unit
- The memory unit stores data, instructions, and intermediate results during processing.
- It consists of RAM (Random Access Memory) and ROM (Read-Only Memory) which are essential for the functioning of the computer.
- RAM is volatile memory used for temporary storage, while ROM is non-volatile memory that stores essential system instructions.
ALU (Arithmetic Logic Unit)
- The ALU is responsible for performing arithmetic and logical operations within the CPU.
- It carries out tasks such as addition, subtraction, multiplication, division, and comparison operations.
- The ALU is a critical component for processing data and executing instructions.
All of the Above
- The CPU consists of the control unit, memory unit, and ALU, which work together to process data and execute instructions.
- Each component plays a vital role in the functioning of the CPU and overall computer system.
- Together, these parts form the core processing unit that drives the operations of the computer.
The desktop computers are also known as ____ computers. - a)workstation
- b)home
- c)personal
- d)all the above
Correct answer is option 'C'. Can you explain this answer?
The desktop computers are also known as ____ computers.
a)
workstation
b)
home
c)
personal
d)
all the above
|
|
Amar Singh answered |
Desktop computers are also known as personal computers. These computers are widely used for various purposes, including work, home, and personal use. Let's explore each of these categories in detail:
1. Workstation:
Desktop computers are commonly used as workstations in offices, businesses, and other professional environments. They offer high processing power, storage capacity, and multi-tasking capabilities, making them suitable for handling complex tasks and running resource-intensive software applications. Workstations are typically connected to a local area network (LAN) to facilitate data sharing and collaboration among multiple users.
2. Home:
Desktop computers are also popularly used in homes for various purposes. They serve as a central hub for managing household tasks, such as budgeting, online shopping, entertainment, and communication. Home desktops are often equipped with multimedia features, including high-quality audio and video capabilities, to enhance the user's entertainment experience. They can also be connected to peripherals like printers, scanners, and speakers.
3. Personal:
The term "personal computer" refers to desktop computers that are used for personal tasks and activities. These computers are primarily owned and used by individuals for personal productivity, browsing the internet, social media, gaming, and other personal interests. Personal desktops are highly customizable, allowing users to choose their preferred hardware specifications, software applications, and operating systems.
4. All the above:
The correct answer to the given question is option 'C' (personal). However, it is worth noting that desktop computers can be categorized as all of the above options. They can serve as workstations in professional settings, be used for various tasks at home, and cater to personal computing needs. The versatility and flexibility of desktop computers make them suitable for a wide range of applications and users.
In conclusion, desktop computers are commonly referred to as personal computers due to their widespread use in work, home, and personal settings. These computers provide the necessary tools and capabilities for different tasks and user requirements.
1. Workstation:
Desktop computers are commonly used as workstations in offices, businesses, and other professional environments. They offer high processing power, storage capacity, and multi-tasking capabilities, making them suitable for handling complex tasks and running resource-intensive software applications. Workstations are typically connected to a local area network (LAN) to facilitate data sharing and collaboration among multiple users.
2. Home:
Desktop computers are also popularly used in homes for various purposes. They serve as a central hub for managing household tasks, such as budgeting, online shopping, entertainment, and communication. Home desktops are often equipped with multimedia features, including high-quality audio and video capabilities, to enhance the user's entertainment experience. They can also be connected to peripherals like printers, scanners, and speakers.
3. Personal:
The term "personal computer" refers to desktop computers that are used for personal tasks and activities. These computers are primarily owned and used by individuals for personal productivity, browsing the internet, social media, gaming, and other personal interests. Personal desktops are highly customizable, allowing users to choose their preferred hardware specifications, software applications, and operating systems.
4. All the above:
The correct answer to the given question is option 'C' (personal). However, it is worth noting that desktop computers can be categorized as all of the above options. They can serve as workstations in professional settings, be used for various tasks at home, and cater to personal computing needs. The versatility and flexibility of desktop computers make them suitable for a wide range of applications and users.
In conclusion, desktop computers are commonly referred to as personal computers due to their widespread use in work, home, and personal settings. These computers provide the necessary tools and capabilities for different tasks and user requirements.
CPU consists of arithmetic and logic units, control unit and internal memory ___ - a)Capacitors
- b)Processors
- c)Registers
- d)Bus
Correct answer is option 'C'. Can you explain this answer?
CPU consists of arithmetic and logic units, control unit and internal memory ___
a)
Capacitors
b)
Processors
c)
Registers
d)
Bus
|
Rainbow Rise Classes answered |
Explanation:
The correct answer is C: Registers.
Here is a detailed explanation:
- A CPU (Central Processing Unit) is the main component of a computer system that performs most of the processing inside the computer.
- The CPU consists of several components, including arithmetic and logic units, control unit, and internal memory.
- The arithmetic and logic units (ALU) perform mathematical and logical operations, such as addition, subtraction, multiplication, and comparison.
- The control unit manages the execution of instructions and coordinates the activities of the other components of the CPU.
- The internal memory, also known as registers, is a small amount of fast memory located within the CPU. It is used to store data and instructions that are currently being processed by the CPU.
- Registers are used to hold the operands and intermediate results during the execution of instructions.
- Registers are faster to access than main memory, which allows for faster processing.
- There are different types of registers, such as general-purpose registers, special-purpose registers, and program counters, each serving a specific purpose in the CPU's operation.
- Overall, registers play a crucial role in the functioning of the CPU by providing fast access to data and instructions during processing.
The correct answer is C: Registers.
Here is a detailed explanation:
- A CPU (Central Processing Unit) is the main component of a computer system that performs most of the processing inside the computer.
- The CPU consists of several components, including arithmetic and logic units, control unit, and internal memory.
- The arithmetic and logic units (ALU) perform mathematical and logical operations, such as addition, subtraction, multiplication, and comparison.
- The control unit manages the execution of instructions and coordinates the activities of the other components of the CPU.
- The internal memory, also known as registers, is a small amount of fast memory located within the CPU. It is used to store data and instructions that are currently being processed by the CPU.
- Registers are used to hold the operands and intermediate results during the execution of instructions.
- Registers are faster to access than main memory, which allows for faster processing.
- There are different types of registers, such as general-purpose registers, special-purpose registers, and program counters, each serving a specific purpose in the CPU's operation.
- Overall, registers play a crucial role in the functioning of the CPU by providing fast access to data and instructions during processing.
Color 2 is used if we press with the _________ mouse button- a)Left
- b)Right
- c)scroll
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
Color 2 is used if we press with the _________ mouse button
a)
Left
b)
Right
c)
scroll
d)
None of these
|
|
EduRev Class 6 answered |
The correct answer is: Right
Explanation:
- When using a computer mouse, there are typically two buttons: the left button and the right button.
- Each button has a different function, and pressing them performs specific actions.
- Pressing the left mouse button is usually associated with selecting or clicking on items, while pressing the right mouse button is often used to access context menus or perform secondary actions.
- In the given question, the color 2 is specified to be used when pressing a mouse button.
- Since the correct answer is B: Right, it means that color 2 is used when the right mouse button is pressed.
- Therefore, if you want to use color 2, you should press the right mouse button.
Explanation:
- When using a computer mouse, there are typically two buttons: the left button and the right button.
- Each button has a different function, and pressing them performs specific actions.
- Pressing the left mouse button is usually associated with selecting or clicking on items, while pressing the right mouse button is often used to access context menus or perform secondary actions.
- In the given question, the color 2 is specified to be used when pressing a mouse button.
- Since the correct answer is B: Right, it means that color 2 is used when the right mouse button is pressed.
- Therefore, if you want to use color 2, you should press the right mouse button.
Software is of ______________types.- a)2
- b)3
- c)4
- d)5
Correct answer is option 'A'. Can you explain this answer?
Software is of ______________types.
a)
2
b)
3
c)
4
d)
5
|
|
Bhumika Mamar answered |
2 types is the correct answer
Which part of computer system accepts input from the user?- a)Input Unit
- b)Output Unit
- c)Control Unit
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
Which part of computer system accepts input from the user?
a)
Input Unit
b)
Output Unit
c)
Control Unit
d)
None of these
|
|
Dr Manju Sen answered |
Which part of computer system accepts input from the user?
The part of the computer system that accepts input from the user is the Input Unit.
Explanation:
Here is a detailed explanation of the answer:
- Input Unit: This is the component of the computer system that allows users to input data and instructions into the computer. It acts as an interface between the user and the computer.
- Examples: Some common examples of input devices that are part of the input unit include keyboards, mice, touchscreens, scanners, and microphones.
- Function: The input unit converts the user's input into a form that can be understood by the computer. It then sends this information to the central processing unit (CPU) for further processing.
- Importance: The input unit is crucial for enabling users to interact with the computer system and provide the necessary input for various tasks and operations.
Therefore, the correct answer is Option A: Input Unit.
Remember that the input unit is responsible for accepting input from the user, while the output unit is responsible for displaying or outputting information to the user. The control unit, on the other hand, is responsible for coordinating and controlling the activities of the computer's hardware components.
The first generation computers used ____ for circuitry. - a)vacuum tubes
- b)magnetic drums
- c)magnetic tubes
- d)magnetic circuitry
Correct answer is option 'A'. Can you explain this answer?
The first generation computers used ____ for circuitry.
a)
vacuum tubes
b)
magnetic drums
c)
magnetic tubes
d)
magnetic circuitry
|
|
Subset Academy answered |
The first generation computers used vacuum tubes for circuitry.
Explanation:
The first generation computers, which were developed in the 1940s and 1950s, used vacuum tubes for circuitry. Vacuum tubes were one of the earliest electronic components that could control the flow of electric current. They were used in computers as switches and amplifiers.
Here are the reasons why vacuum tubes were used in the first generation computers:
1. Amplification: Vacuum tubes could amplify weak electrical signals, making them suitable for use in the early computers.
2. Switching: Vacuum tubes could be used as switches to control the flow of electric current. They could be turned on or off by applying a small voltage.
3. Reliability: Although vacuum tubes were not as reliable as later electronic components, they were more reliable than the mechanical switches and relays used in earlier computing devices.
4. Size and Weight: Vacuum tubes were relatively large and heavy, but they were smaller and lighter than the mechanical switches and relays used in earlier computers.
5. Availability: Vacuum tubes were widely available during the time when the first generation computers were being developed. They were commonly used in radios and other electronic devices.
However, vacuum tubes had some limitations which led to the development of transistor-based computers in the second generation. Vacuum tubes were bulky, consumed a lot of power, generated a significant amount of heat, and were prone to failure. Transistors, which were smaller, more reliable, and consumed less power, replaced vacuum tubes in the second generation computers.
Explanation:
The first generation computers, which were developed in the 1940s and 1950s, used vacuum tubes for circuitry. Vacuum tubes were one of the earliest electronic components that could control the flow of electric current. They were used in computers as switches and amplifiers.
Here are the reasons why vacuum tubes were used in the first generation computers:
1. Amplification: Vacuum tubes could amplify weak electrical signals, making them suitable for use in the early computers.
2. Switching: Vacuum tubes could be used as switches to control the flow of electric current. They could be turned on or off by applying a small voltage.
3. Reliability: Although vacuum tubes were not as reliable as later electronic components, they were more reliable than the mechanical switches and relays used in earlier computing devices.
4. Size and Weight: Vacuum tubes were relatively large and heavy, but they were smaller and lighter than the mechanical switches and relays used in earlier computers.
5. Availability: Vacuum tubes were widely available during the time when the first generation computers were being developed. They were commonly used in radios and other electronic devices.
However, vacuum tubes had some limitations which led to the development of transistor-based computers in the second generation. Vacuum tubes were bulky, consumed a lot of power, generated a significant amount of heat, and were prone to failure. Transistors, which were smaller, more reliable, and consumed less power, replaced vacuum tubes in the second generation computers.
The top button, a diamond shape with a line through it is ________- a)Paste
- b)Cut
- c)Copy
- d)Crop
Correct answer is option 'D'. Can you explain this answer?
The top button, a diamond shape with a line through it is ________
a)
Paste
b)
Cut
c)
Copy
d)
Crop
|
|
EduRev Class 6 answered |
Answer:
The top button, a diamond shape with a line through it, is the Crop button.
Explanation:
The Crop button is represented by a diamond shape with a line through it, and it is commonly found in image editing software. This button allows users to select a specific area of an image and remove or trim the surrounding parts. Here is a detailed explanation of the options presented:
- A: Paste: This option is not correct as it does not match the description of the button in question. The Paste button is typically represented by a clipboard icon.
- B: Cut: This option is not correct as it also does not match the description of the button. The Cut button is usually represented by a pair of scissors or a dotted line.
- C: Copy: This option is not correct as well. The Copy button is often represented by two overlapping documents or a document with a plus sign.
- D: Crop: This is the correct answer. The Crop button is represented by a diamond shape with a line through it, indicating the ability to trim or remove parts of an image.
Therefore, the correct answer is D: Crop.
The top button, a diamond shape with a line through it, is the Crop button.
Explanation:
The Crop button is represented by a diamond shape with a line through it, and it is commonly found in image editing software. This button allows users to select a specific area of an image and remove or trim the surrounding parts. Here is a detailed explanation of the options presented:
- A: Paste: This option is not correct as it does not match the description of the button in question. The Paste button is typically represented by a clipboard icon.
- B: Cut: This option is not correct as it also does not match the description of the button. The Cut button is usually represented by a pair of scissors or a dotted line.
- C: Copy: This option is not correct as well. The Copy button is often represented by two overlapping documents or a document with a plus sign.
- D: Crop: This is the correct answer. The Crop button is represented by a diamond shape with a line through it, indicating the ability to trim or remove parts of an image.
Therefore, the correct answer is D: Crop.
Computer is a combination of hardware and _____________________.- a)Software
- b)Application
- c)Processor
- d)All of these
Correct answer is option 'A'. Can you explain this answer?
Computer is a combination of hardware and _____________________.
a)
Software
b)
Application
c)
Processor
d)
All of these
|
Akshita Reddy answered |
The correct answer is option 'A' - Software.
Explanation:
A computer is a combination of hardware and software. Let's understand what hardware and software refer to and how they are essential components of a computer system.
1. Hardware:
Hardware refers to the physical components of a computer system. These are tangible parts that you can touch and see. Examples of computer hardware include the monitor, keyboard, mouse, central processing unit (CPU), memory, hard drive, and other peripherals.
2. Software:
Software, on the other hand, refers to the intangible instructions or programs that tell the hardware what to do. It is a collection of data or instructions that guide the computer system in performing specific tasks. Software can be categorized into two types:
a) System software:
System software is responsible for managing and controlling the computer hardware. It provides a platform for running application software. Examples of system software include operating systems like Windows, macOS, and Linux.
b) Application software:
Application software is designed to perform specific tasks or functions for the user. It helps users accomplish their goals or solve specific problems. Examples of application software include word processors, spreadsheets, web browsers, and multimedia players.
Importance of Software in a Computer System:
Software plays a crucial role in a computer system. Here's why it is important:
1. Enables User Interaction:
Software provides a user-friendly interface that allows users to interact with the computer system and perform various tasks. It enables users to run programs, browse the internet, create documents, play games, and much more.
2. Controls Hardware:
Software acts as a mediator between the user and the computer hardware. It controls and manages the hardware resources, ensuring they are utilized efficiently. For example, the operating system manages memory, disk space, and CPU usage.
3. Extends Functionality:
Software extends the functionality of a computer system. With different software applications, users can perform a wide range of tasks, such as editing documents, creating presentations, editing photos, and playing music or videos.
4. Flexibility and Upgradability:
Software can be easily updated or upgraded to incorporate new features, fix bugs, or enhance performance. This allows users to keep their computer systems up to date and adapt to changing technology requirements.
Conclusion:
In conclusion, while hardware forms the physical components of a computer system, software provides the instructions and programs that enable the hardware to perform specific tasks. The combination of hardware and software is essential for a computer to function effectively.
Explanation:
A computer is a combination of hardware and software. Let's understand what hardware and software refer to and how they are essential components of a computer system.
1. Hardware:
Hardware refers to the physical components of a computer system. These are tangible parts that you can touch and see. Examples of computer hardware include the monitor, keyboard, mouse, central processing unit (CPU), memory, hard drive, and other peripherals.
2. Software:
Software, on the other hand, refers to the intangible instructions or programs that tell the hardware what to do. It is a collection of data or instructions that guide the computer system in performing specific tasks. Software can be categorized into two types:
a) System software:
System software is responsible for managing and controlling the computer hardware. It provides a platform for running application software. Examples of system software include operating systems like Windows, macOS, and Linux.
b) Application software:
Application software is designed to perform specific tasks or functions for the user. It helps users accomplish their goals or solve specific problems. Examples of application software include word processors, spreadsheets, web browsers, and multimedia players.
Importance of Software in a Computer System:
Software plays a crucial role in a computer system. Here's why it is important:
1. Enables User Interaction:
Software provides a user-friendly interface that allows users to interact with the computer system and perform various tasks. It enables users to run programs, browse the internet, create documents, play games, and much more.
2. Controls Hardware:
Software acts as a mediator between the user and the computer hardware. It controls and manages the hardware resources, ensuring they are utilized efficiently. For example, the operating system manages memory, disk space, and CPU usage.
3. Extends Functionality:
Software extends the functionality of a computer system. With different software applications, users can perform a wide range of tasks, such as editing documents, creating presentations, editing photos, and playing music or videos.
4. Flexibility and Upgradability:
Software can be easily updated or upgraded to incorporate new features, fix bugs, or enhance performance. This allows users to keep their computer systems up to date and adapt to changing technology requirements.
Conclusion:
In conclusion, while hardware forms the physical components of a computer system, software provides the instructions and programs that enable the hardware to perform specific tasks. The combination of hardware and software is essential for a computer to function effectively.
The mightiest computers but at the same time, the most expensive ones are known as ___ - a)Micro computers
- b)Mainframe
- c)Super computers
- d)Mini computers
Correct answer is option 'C'. Can you explain this answer?
The mightiest computers but at the same time, the most expensive ones are known as ___
a)
Micro computers
b)
Mainframe
c)
Super computers
d)
Mini computers
|
Maitri Bajaj answered |
The mightiest computers but at the same time, the most expensive ones are known as Super computers
Supercomputers are the most powerful and fastest computers available. They are designed to perform complex calculations, process large amounts of data, and solve problems that require immense processing power. These computers are specifically built to tackle scientific and engineering tasks that regular computers cannot handle efficiently.
Key Features of Supercomputers:
- High Performance: Supercomputers are designed to deliver high performance and processing speed. They can perform trillions of calculations per second, known as teraflops or even petaflops.
- Parallel Processing: Supercomputers use parallel processing techniques, which means they divide tasks into smaller sub-tasks and process them simultaneously. This allows for faster execution of complex calculations.
- Large Storage Capacity: Supercomputers have large storage capacities to handle and process huge amounts of data. This is important for scientific research, weather forecasting, and data analysis.
- Specialized Architecture: Supercomputers often have custom-designed architectures that optimize their performance for specific tasks. They may include specialized processors, memory systems, and interconnects.
- Advanced Cooling Systems: Supercomputers generate a significant amount of heat due to their high processing power. Therefore, they require advanced cooling systems to prevent overheating and maintain optimal performance.
Applications of Supercomputers:
Supercomputers play a crucial role in various fields, including:
- Scientific Research: Supercomputers are used in fields such as astrophysics, molecular modeling, climate research, and particle physics to simulate complex phenomena, analyze large datasets, and solve intricate equations.
- Weather Forecasting: Supercomputers are utilized in meteorological centers to accurately predict weather patterns, track storms, and assess climate change.
- Drug Discovery and Genomics: Supercomputers help analyze DNA sequences, model protein structures, and simulate drug interactions. This aids in the development of new drugs and personalized medicine.
- Aerospace and Engineering: Supercomputers are used for aerodynamic simulations, designing aircraft, analyzing fluid dynamics, and optimizing engineering processes.
- Financial Modeling: Supercomputers are employed in financial institutions for tasks like risk analysis, portfolio optimization, and high-frequency trading.
Cost and Availability:
Supercomputers are highly expensive due to their advanced technology, specialized components, and high-performance requirements. They can cost millions or even billions of dollars to develop, maintain, and operate. As a result, they are typically owned and used by governments, research institutions, universities, and large corporations.
Overall, supercomputers are the pinnacle of computing technology, providing immense processing power for solving complex problems across various fields.
Supercomputers are the most powerful and fastest computers available. They are designed to perform complex calculations, process large amounts of data, and solve problems that require immense processing power. These computers are specifically built to tackle scientific and engineering tasks that regular computers cannot handle efficiently.
Key Features of Supercomputers:
- High Performance: Supercomputers are designed to deliver high performance and processing speed. They can perform trillions of calculations per second, known as teraflops or even petaflops.
- Parallel Processing: Supercomputers use parallel processing techniques, which means they divide tasks into smaller sub-tasks and process them simultaneously. This allows for faster execution of complex calculations.
- Large Storage Capacity: Supercomputers have large storage capacities to handle and process huge amounts of data. This is important for scientific research, weather forecasting, and data analysis.
- Specialized Architecture: Supercomputers often have custom-designed architectures that optimize their performance for specific tasks. They may include specialized processors, memory systems, and interconnects.
- Advanced Cooling Systems: Supercomputers generate a significant amount of heat due to their high processing power. Therefore, they require advanced cooling systems to prevent overheating and maintain optimal performance.
Applications of Supercomputers:
Supercomputers play a crucial role in various fields, including:
- Scientific Research: Supercomputers are used in fields such as astrophysics, molecular modeling, climate research, and particle physics to simulate complex phenomena, analyze large datasets, and solve intricate equations.
- Weather Forecasting: Supercomputers are utilized in meteorological centers to accurately predict weather patterns, track storms, and assess climate change.
- Drug Discovery and Genomics: Supercomputers help analyze DNA sequences, model protein structures, and simulate drug interactions. This aids in the development of new drugs and personalized medicine.
- Aerospace and Engineering: Supercomputers are used for aerodynamic simulations, designing aircraft, analyzing fluid dynamics, and optimizing engineering processes.
- Financial Modeling: Supercomputers are employed in financial institutions for tasks like risk analysis, portfolio optimization, and high-frequency trading.
Cost and Availability:
Supercomputers are highly expensive due to their advanced technology, specialized components, and high-performance requirements. They can cost millions or even billions of dollars to develop, maintain, and operate. As a result, they are typically owned and used by governments, research institutions, universities, and large corporations.
Overall, supercomputers are the pinnacle of computing technology, providing immense processing power for solving complex problems across various fields.
_____________ is used to add text and Picture in computer- a)Printer
- b)Scanner
- c)Speakers
- d)Mouse
Correct answer is option 'B'. Can you explain this answer?
_____________ is used to add text and Picture in computer
a)
Printer
b)
Scanner
c)
Speakers
d)
Mouse
|
|
Dr Manju Sen answered |
Answer:
The correct answer is Scanner. Here's a detailed explanation:
Text and Picture:
- Text and picture are important elements in computer applications and documents. They can be used for various purposes such as creating reports, designing graphics, and adding visual content to presentations.
- To add text and pictures in a computer, specific devices and tools are required.
Devices and Tools:
- Printer: A printer is a peripheral device that is used to produce hard copies of documents and images from a computer. It can print text and pictures on various types of paper.
- Scanner: A scanner is a device that can convert physical documents and images into digital format. It allows users to input text and pictures into a computer by scanning them.
- Speakers: Speakers are output devices that produce sound. While they are not directly used for adding text and pictures, they can be used to enhance multimedia experiences that include audio along with visual content.
- Mouse: A mouse is an input device that is used to navigate and interact with graphical user interfaces. While it is not specifically used for adding text and pictures, it can be used to select and manipulate elements on the screen.
Conclusion:
- Among the given options, Scanner is the device that is primarily used to add text and pictures in a computer.
- Printers can produce hard copies, speakers provide audio output, and the mouse is used for navigation and interaction.
- However, it is important to note that there are other devices and tools available for adding text and pictures in a computer, such as keyboards for text input and image editing software for graphic design.
The correct answer is Scanner. Here's a detailed explanation:
Text and Picture:
- Text and picture are important elements in computer applications and documents. They can be used for various purposes such as creating reports, designing graphics, and adding visual content to presentations.
- To add text and pictures in a computer, specific devices and tools are required.
Devices and Tools:
- Printer: A printer is a peripheral device that is used to produce hard copies of documents and images from a computer. It can print text and pictures on various types of paper.
- Scanner: A scanner is a device that can convert physical documents and images into digital format. It allows users to input text and pictures into a computer by scanning them.
- Speakers: Speakers are output devices that produce sound. While they are not directly used for adding text and pictures, they can be used to enhance multimedia experiences that include audio along with visual content.
- Mouse: A mouse is an input device that is used to navigate and interact with graphical user interfaces. While it is not specifically used for adding text and pictures, it can be used to select and manipulate elements on the screen.
Conclusion:
- Among the given options, Scanner is the device that is primarily used to add text and pictures in a computer.
- Printers can produce hard copies, speakers provide audio output, and the mouse is used for navigation and interaction.
- However, it is important to note that there are other devices and tools available for adding text and pictures in a computer, such as keyboards for text input and image editing software for graphic design.
Screen appeared after login of Computer is called:- a)Start Menu
- b)Desktop
- c)Taskbar
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
Screen appeared after login of Computer is called:
a)
Start Menu
b)
Desktop
c)
Taskbar
d)
None of these
|
|
Nishanth Majumdar answered |
Desktop
The correct answer is option 'B', which is the Desktop. The screen that appears after logging into a computer is called the Desktop. It is the main screen that you see on your computer, where you can access and organize your files, folders, and applications. The Desktop is an essential part of the graphical user interface (GUI) of an operating system and serves as a visual representation of your computer's file system.
Explanation:
The Desktop is the first thing you see after logging into your computer. It is the background screen that displays icons, shortcuts, and other elements that allow you to interact with your computer. The Desktop provides a user-friendly interface that makes it easy to access and manage your files and applications.
Components of the Desktop:
The Desktop consists of several components that help you navigate and interact with your computer. Some of the key components include:
1. Icons: Icons are small graphical representations of files, folders, and applications. They provide a visual representation of the files and programs stored on your computer. By double-clicking on an icon, you can open files or launch applications.
2. Shortcuts: Shortcuts are similar to icons but are quick links to files, folders, or applications located elsewhere on your computer. They provide a convenient way to access frequently used files or programs without navigating through multiple folders.
3. Taskbar: The Taskbar is a horizontal bar typically located at the bottom of the screen. It displays the Start button, which allows you to access the Start Menu, and other icons for currently running applications. The Taskbar also provides quick access to the system tray, which contains icons for system notifications and utilities.
4. Start Menu: The Start Menu is a menu that appears when you click the Start button on the Taskbar. It provides access to various features and functions of the operating system, including programs, settings, documents, and power options.
Conclusion:
In conclusion, the correct answer to the question is option 'B' - Desktop. The Desktop is the screen that appears after logging into a computer and serves as the main interface for accessing and managing files, folders, and applications. It consists of icons, shortcuts, the Taskbar, and the Start Menu, all of which provide a user-friendly environment for interacting with the computer.
The correct answer is option 'B', which is the Desktop. The screen that appears after logging into a computer is called the Desktop. It is the main screen that you see on your computer, where you can access and organize your files, folders, and applications. The Desktop is an essential part of the graphical user interface (GUI) of an operating system and serves as a visual representation of your computer's file system.
Explanation:
The Desktop is the first thing you see after logging into your computer. It is the background screen that displays icons, shortcuts, and other elements that allow you to interact with your computer. The Desktop provides a user-friendly interface that makes it easy to access and manage your files and applications.
Components of the Desktop:
The Desktop consists of several components that help you navigate and interact with your computer. Some of the key components include:
1. Icons: Icons are small graphical representations of files, folders, and applications. They provide a visual representation of the files and programs stored on your computer. By double-clicking on an icon, you can open files or launch applications.
2. Shortcuts: Shortcuts are similar to icons but are quick links to files, folders, or applications located elsewhere on your computer. They provide a convenient way to access frequently used files or programs without navigating through multiple folders.
3. Taskbar: The Taskbar is a horizontal bar typically located at the bottom of the screen. It displays the Start button, which allows you to access the Start Menu, and other icons for currently running applications. The Taskbar also provides quick access to the system tray, which contains icons for system notifications and utilities.
4. Start Menu: The Start Menu is a menu that appears when you click the Start button on the Taskbar. It provides access to various features and functions of the operating system, including programs, settings, documents, and power options.
Conclusion:
In conclusion, the correct answer to the question is option 'B' - Desktop. The Desktop is the screen that appears after logging into a computer and serves as the main interface for accessing and managing files, folders, and applications. It consists of icons, shortcuts, the Taskbar, and the Start Menu, all of which provide a user-friendly environment for interacting with the computer.
_____________ is a pointing device.- a)Headphone
- b)Keyboard
- c)Mouse
- d)Web Camera
Correct answer is option 'C'. Can you explain this answer?
_____________ is a pointing device.
a)
Headphone
b)
Keyboard
c)
Mouse
d)
Web Camera
|
|
Anand Patel answered |
< b="" />Mouse< /> is a pointing device.
- A mouse is a common input device that is used to control the movement of the cursor on a computer screen.
- It is a small handheld device that typically has one or more buttons on top and a flat surface on the bottom that allows it to glide smoothly across a desk or mouse pad.
- The movement of the mouse is translated into corresponding movement of the cursor on the screen.
- The buttons on the mouse can be clicked to perform various actions, such as selecting items or opening menus.
- The mouse is connected to the computer either through a wired connection or wirelessly through technologies like Bluetooth or infrared.
- It is an essential tool for navigating through graphical user interfaces and interacting with software applications.
- The mouse can be used to perform tasks such as clicking on icons, dragging and dropping files, scrolling through documents or web pages, and more.
- In addition to the standard mouse, there are also specialized mice available for specific purposes. For example, gaming mice often have additional buttons and customizable settings for enhanced gameplay.
- Some mice also have ergonomic designs that are more comfortable to use for extended periods of time.
- Overall, the mouse is an integral part of the modern computer setup and provides a convenient and efficient way to interact with digital content.
- A mouse is a common input device that is used to control the movement of the cursor on a computer screen.
- It is a small handheld device that typically has one or more buttons on top and a flat surface on the bottom that allows it to glide smoothly across a desk or mouse pad.
- The movement of the mouse is translated into corresponding movement of the cursor on the screen.
- The buttons on the mouse can be clicked to perform various actions, such as selecting items or opening menus.
- The mouse is connected to the computer either through a wired connection or wirelessly through technologies like Bluetooth or infrared.
- It is an essential tool for navigating through graphical user interfaces and interacting with software applications.
- The mouse can be used to perform tasks such as clicking on icons, dragging and dropping files, scrolling through documents or web pages, and more.
- In addition to the standard mouse, there are also specialized mice available for specific purposes. For example, gaming mice often have additional buttons and customizable settings for enhanced gameplay.
- Some mice also have ergonomic designs that are more comfortable to use for extended periods of time.
- Overall, the mouse is an integral part of the modern computer setup and provides a convenient and efficient way to interact with digital content.
Chapter doubts & questions for Computer Science - 6 Months Preparation for Class 6 (CBSE) 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Computer Science - 6 Months Preparation for Class 6 (CBSE) in English & Hindi are available as part of Class 6 exam.
Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free.
6 Months Preparation for Class 6 (CBSE)
303 videos|1455 docs|206 tests
|
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup