Olympiad Test : Fundamentals Of Computer - 1 - Class 7 MCQ

A mobile computer or PDA is a portable device that combines the capabilities of any ordinary PC with the scanning functions necessary to register barcodes or RFID tags. These devices are especially used by retail workers to check prices or make inventories or also by transportations companies to track their deliveries, however, they can be useful into multiples industries such as pharmaceuticals.

Supercomputer Developed in India:
There are two supercomputers that have been developed in India:
1. Param:
- Param is a series of supercomputers developed by the Centre for Development of Advanced Computing (C-DAC) in India.
- It is designed to meet the computational needs of scientific and engineering applications.
- Param supercomputers have been used in various fields such as weather forecasting, climate modeling, computational biology, and aerospace research.
2. Anurag:
- Anurag is another supercomputer developed in India.
- It was developed by the Indian Institute of Tropical Meteorology (IITM) in Pune.
- Anurag is used for weather and climate research, including numerical weather prediction, climate modeling, and monsoon studies.
Conclusion:
The correct answer to the question is option D: Both (a) and (b). Both Param and Anurag are supercomputers developed in India.

Device Used for Reading Cheques in India: MICR
Explanation:
- In India, the device used for reading cheques is called MICR (Magnetic Ink Character Recognition).
- MICR technology is widely used for cheque processing and clearing in India.
- It is a secure and efficient way to read and process information from cheques.
- MICR uses a combination of magnetic ink and special characters to encode information on the cheque.
- The MICR line on the bottom of the cheque contains the necessary information, such as the bank code, branch code, account number, and cheque number.
- MICR devices are specifically designed to read and interpret the magnetic ink characters on cheques.
- These devices use special sensors to detect and decode the magnetic ink characters accurately.
- Once the information is read, it can be further processed for various banking operations, such as clearing, verification, and record-keeping.
- MICR technology ensures high accuracy and reliability in cheque processing, reducing the chances of errors and fraud.
- It is an essential component of the banking infrastructure in India, facilitating smooth and secure cheque transactions.

The correct statements are:

• (i) Supercomputers are used for weather forecasting. Supercomputers are extensively used in weather forecasting due to their ability to process massive amounts of data and perform complex calculations in a short amount of time. This helps meteorologists analyze weather patterns and make accurate predictions.


• (ii) Supercomputers are used for rocketing and plasma physics. Supercomputers are also utilized in the field of rocketing and plasma physics. They are used to simulate and model the behavior of rockets, spacecraft, and plasma, allowing scientists and engineers to study their dynamics and make advancements in these areas.


• (iii) Processing speed of microcomputer lies in the range of 10-30 MIPS. Microcomputers, also known as personal computers, typically have processing speeds ranging from 10-30 MIPS (Millions of Instructions Per Second). This speed can vary depending on the specific model and configuration of the microcomputer.

The incorrect statement is:

• (iv) Mainframe computers are less powerful than microcomputers. This statement is false. Mainframe computers are high-performance computers that are designed for handling large-scale processing and data storage. They are typically more powerful than microcomputers and are used in applications that require immense computing power, such as in large organizations, government agencies, and financial institutions.

Therefore, the correct answer is B: I, II & III are correct.

Device used to scan input and convert it into a computer file:
There are several devices that can be used to scan input and convert it into a computer file. However, the most commonly used device for this purpose is a scanner.
Scanner:
- A scanner is a device that optically scans images, printed text, or objects and converts them into a digital format that can be saved and manipulated on a computer.
- It works by shining a light onto the image or document and then capturing the reflected light with a sensor.
- The sensor converts the light into electrical signals, which are then translated into binary code and saved as a computer file.
- Scanners are commonly used to digitize documents, such as photos, contracts, and printed text, making them easier to store, share, and manipulate on a computer.
Other options:
- Keyboard: The keyboard is primarily used for inputting text and commands into a computer. It does not have the capability to scan and convert physical documents into digital files.
- Mouse: The mouse is an input device used to control the cursor on a computer screen. It does not have the capability to scan and convert physical documents into digital files.
- Microphone: The microphone is used for recording audio input. It does not have the capability to scan and convert physical documents into digital files.
Conclusion:
The correct answer is C: Scanner. A scanner is the device used to scan input, such as images or documents, and convert them into a computer file.

Device used for checking a multiple answer sheet:

• OMR (Optical Mark Recognition): OMR is a device used for checking multiple choice answer sheets. It uses optical scanning technology to detect marked answers on the sheet.


• OCR (Optical Character Recognition): OCR is a technology used to convert different types of documents into editable and searchable data. It is not specifically used for checking multiple answer sheets.


• MICR (Magnetic Ink Character Recognition): MICR is a technology used for recognizing characters printed with magnetic ink. It is commonly used in banking for check processing. It is not used for checking multiple answer sheets.


• Light pen: A light pen is an input device that allows users to point to objects on a computer screen. It is not used for checking multiple answer sheets.

Therefore, the correct device used for checking a multiple answer sheet is an OMR device. OMR devices are designed to quickly and accurately detect marked answers on multiple choice answer sheets, making them a widely used tool in educational institutions for assessments and examinations.

Definition of Double Click:
Double click refers to the action of quickly clicking the left mouse button twice in succession.
How to Perform a Double Click:
To perform a double click, follow these steps:
1. Position the mouse cursor over the desired target (e.g., a file, folder, or icon).
2. Make sure the left mouse button is not already pressed.
3. Quickly press the left mouse button twice in rapid succession.
4. Release the left mouse button after the second click.
Importance of Double Click:
Double click is a common action used in various computer applications and operating systems. It is an essential skill for interacting with graphical user interfaces (GUIs) and performing various tasks efficiently. Understanding how to double click allows users to:
- Open files, folders, and applications: Double clicking on an icon or shortcut opens the associated file, folder, or application.
- Select text or objects: Double clicking on a word or object selects it, making it easier to edit or manipulate.
- Execute commands: Some programs or features require a double click to activate specific commands or perform certain actions.
- Launch programs or functions: In certain software, double clicking on a specific area or element launches additional programs or functions.
- Access context menus: In some cases, double clicking on an item brings up a context menu with additional options or settings.
Conclusion:
Double click is a fundamental action in computer usage, allowing users to interact with graphical interfaces and perform various tasks efficiently. By following the steps mentioned above, users can quickly and accurately perform double clicks to open files, select objects, execute commands, launch programs, and access context menus.

Web camera is an input device.
- An input device is any hardware device that allows data to be entered into a computer. It enables the user to input data or commands into the computer for processing.
- A web camera, also known as a webcam, is a video camera that captures and streams live video footage or images over the internet or a computer network.
- It is typically connected to a computer via USB and is used for various purposes such as video conferencing, live streaming, video recording, and online communication.
- The camera captures video or images and sends them to the computer, where they can be viewed or used for different applications.
- The computer processes the input from the web camera and displays the video or images on the screen or transmits them over the internet.
- Therefore, a web camera is classified as an input device because it allows the user to input visual data into the computer for processing and utilization.

OCR stands for Optical Character Recognition.
Explanation:
OCR is a technology that is used to convert different types of documents, such as scanned paper documents, PDF files, or images captured by a digital camera, into editable and searchable data. It recognizes and extracts text from these documents, making it possible to search, edit, and manipulate the content.
Key Points:
- OCR stands for Optical Character Recognition.
- It is a technology used to convert documents into editable and searchable data.
- OCR can be used to extract text from scanned paper documents, PDF files, or images.
- The extracted text can be searched, edited, and manipulated.
- OCR has various applications, including document digitization, data entry automation, and text-to-speech conversion.
- It is an important tool in industries such as banking, healthcare, and publishing.
- OCR technology has advanced over the years, improving accuracy and speed.
- It plays a crucial role in the digital transformation of documents and information management.

The credit card contains a magnetic strip and can store information magnetically.
The credit card is a widely used payment card that contains a magnetic strip. This magnetic strip is typically located on the back of the card and is used to store information magnetically. Here are some key points to consider:
1. Magnetic strip: The credit card's magnetic strip is made up of tiny iron-based magnetic particles that can be magnetized or demagnetized. It is capable of storing data magnetically.
2. Information storage: The magnetic strip on a credit card can store various types of information, including the cardholder's name, account number, expiration date, and sometimes even additional security features such as a CVV code.
3. Usage: When a credit card is used for a transaction, the magnetic strip is swiped through a card reader. The reader detects the magnetic data stored on the strip and transfers it to the payment processing system for verification and authorization.
4. Legacy technology: While credit cards with magnetic strips are still widely used, they are considered to be a less secure form of payment compared to newer technologies such as chip-enabled cards. This is because the magnetic strip can be easily copied or compromised, leading to potential fraud.
5. Transition to chip-based cards: In recent years, many countries have transitioned to chip-based credit cards, which provide enhanced security features. These cards have an embedded microchip that encrypts transaction data, making it more difficult for fraudsters to clone or access sensitive information.
In conclusion, the credit card is the card that contains a magnetic strip and can store information magnetically. However, it is worth noting that the industry is shifting towards more secure chip-based cards to combat fraud and enhance payment security.

Answer:

The correct answer is Plotter.

Explanation:

A plotter is a type of printer that is specifically designed for printing graphs, maps, and charts. Unlike regular printers, which use inkjet or laser technology to print text and images, plotters use vector graphics to create high-quality, precise prints.

Key Points:

• A plotter is a specialized printer used for printing graphs, maps, and charts.


• Plotters use vector graphics to create precise prints.


• Regular printers, such as inkjet or laser printers, are not suitable for printing large-scale graphics.


• Plotters are commonly used in engineering, architecture, and design fields.


• They are capable of printing on large paper sizes and can produce detailed, accurate prints.

Therefore, if you need to print graphs, maps, or charts, a plotter would be the most suitable choice.

Device for Transferring Files to Other Computers without Damage:


There are several devices that can be used for transferring files to other computers on a network without any damage. However, the most common and effective device for this purpose is a modem.
Modem:
- A modem is a device that enables communication between computers over a network. It converts digital signals from a computer into analog signals that can be transmitted over telephone lines or other communication channels.
- Modems have built-in features that ensure the safe and secure transfer of files without any damage.
- Modems can transfer files of various types and sizes, including documents, images, videos, and audio files.
- They provide high-speed data transfer rates, allowing files to be transferred quickly and efficiently.
- Modems support various file transfer protocols, such as FTP (File Transfer Protocol) and HTTP (Hypertext Transfer Protocol), which ensure the integrity of the transferred files.
- Modems also have built-in error-checking mechanisms that detect and correct any errors that may occur during the file transfer process.
- Additionally, modems can be connected to multiple computers on a network, allowing files to be shared and transferred between them easily.
Conclusion:
In summary, a modem is the most suitable device for transferring files to other computers on a network without any damage. Its built-in features, high-speed data transfer rates, and support for various file transfer protocols make it a reliable and efficient option for file sharing and transfer.

Result displayed on the monitor: Soft copy

• Definition: The result displayed on the monitor is called a soft copy.


• Meaning: A soft copy refers to the digital representation of information, such as text, images, or videos, that is displayed on a computer monitor or other electronic devices.


• Characteristics: Soft copies are characterized by their ability to be edited, manipulated, and stored electronically.


• Examples: Examples of soft copies include documents displayed on a computer screen, digital photos, or videos played on a smartphone.


• Advantages: Soft copies are easily accessible, can be shared instantly through electronic means, and can be stored without taking up physical space.


• Disadvantages: Soft copies are susceptible to data loss or corruption if not properly backed up, and they may require specific software or devices to view or edit.

Therefore, the result displayed on the monitor is referred to as a soft copy. It is a digital representation of information that can be edited, manipulated, and stored electronically.

Braille Printer:
- A Braille printer is a type of printer that is specifically designed to produce output in Braille text, which is a tactile writing system used by individuals with visual impairments.
- It allows visually impaired individuals to read and interpret printed materials independently.
- Braille printers use embossing technology to create raised dots on paper, representing Braille characters.
- These printers can produce Braille text on various materials such as paper, plastic, and even metal.
- Braille printers typically have a high resolution to accurately reproduce the small dots required for Braille characters.
- They often have adjustable settings for dot height and spacing to meet individual user preferences.
- Braille printers are commonly used in schools, libraries, and other institutions that support individuals with visual impairments.
- They are an essential tool for creating accessible educational materials, books, and documents for the blind and visually impaired community.

Modem is a/an ____ device.

Modem is a telecommunications device that allows computers or other devices to connect to the internet. It modulates and demodulates signals to enable the transmission of data over communication lines.

Options:
- Input: An input device is used to provide data or instructions to a computer system. A modem, however, is not primarily used for inputting data or instructions.
- Output: An output device is used to display or output data from a computer system. A modem, however, is not primarily used for outputting data.
- Recording: A recording device is used to store or record data. A modem does not primarily function as a recording device.
- Both a and b: The correct answer is option D. A modem can be considered both an input and output device as it allows data to be sent and received over a network connection.
In summary, a modem is primarily a telecommunications device that enables data transmission over communication lines, making it both an input and output device.

Microphone accepts Sound as input.
Explanation:
- Definition of a microphone: A microphone is a device that converts sound waves into an electrical signal.
- Input: The input for a microphone is sound, which can be in the form of speech, music, or any other audio signal.
- Function of a microphone: The main function of a microphone is to capture sound waves and convert them into an electrical signal that can be processed or recorded.
- Transduction: This conversion process is known as transduction, where the microphone's diaphragm vibrates in response to the sound waves, and the attached coil or capacitor produces an electrical signal.
- Types of microphones: There are different types of microphones available, such as dynamic microphones, condenser microphones, ribbon microphones, etc., each with its own unique characteristics and applications.
- Applications: Microphones are widely used in various fields, including telecommunications, broadcasting, recording studios, live performances, conferences, and many more.
- Compatibility: Microphones are compatible with a wide range of devices, including computers, smartphones, audio recorders, amplifiers, and other audio equipment.
- Output: The output of a microphone is an electrical signal that can be amplified, processed, or recorded using other audio devices.
In conclusion, a microphone accepts sound as input and converts it into an electrical signal for further processing or recording.

Flatbed plotters are output devices whose name also hints at their function. They work by fixing paper on a flat surface while pens move to draw the image. The pen itself may be attached to an arm, allow it to easily move over the paper. They do not use traditional printing heads, nozzles, and ink cartridges.

Utility software performs the maintenance work of a computer. Utility software is a type of system software that helps in managing and optimizing the performance of a computer system. It includes a range of tools and applications designed to perform maintenance tasks and ensure the smooth running of the computer. Some common examples of utility software include antivirus software, disk cleanup tools, system optimization tools, and backup software.
Functions of utility software:
- Virus scanning and removal: Utility software includes antivirus programs that help detect and remove viruses, malware, and other malicious software from the computer.
- Disk cleanup and optimization: Utility software provides tools to clean up unnecessary files, temporary files, and duplicate files from the computer's hard drive, which helps in optimizing disk space and improving system performance.
- System maintenance: Utility software includes tools for defragmenting the hard drive, repairing disk errors, and managing system updates and patches, ensuring the overall health and stability of the computer system.
- Data backup and recovery: Utility software allows users to create backups of important files and folders and provides options for recovering lost or deleted data.
- System performance monitoring: Utility software includes tools that monitor the performance of the computer system, such as CPU usage, memory usage, and network activity, helping users identify and troubleshoot any performance issues.
In summary, utility software plays a crucial role in maintaining and optimizing the performance of a computer system. It provides a range of tools and applications that help in tasks such as virus scanning, disk cleanup, system maintenance, data backup, and performance monitoring.

Operating Systems:
- 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 software applications.
- The operating system performs tasks such as memory management, process management, file system management, and user interface management.
Options:
A: MSDOS
- MSDOS (Microsoft Disk Operating System) is a command-line operating system developed by Microsoft.
- It was widely used in IBM-compatible personal computers during the 1980s and early 1990s.
- MSDOS provided a command-line interface where users could enter commands to perform various tasks.
B: MS Paint
- MS Paint (Microsoft Paint) is not an operating system.
- It is a basic raster graphics editor included with Microsoft Windows.
- It allows users to create and edit images using tools such as brushes, shapes, and colors.
C: MS Office
- MS Office (Microsoft Office) is not an operating system.
- It is a suite of productivity applications developed by Microsoft.
- MS Office includes programs such as Word, Excel, PowerPoint, and Outlook.
D: MS Frontpage
- MS Frontpage (Microsoft FrontPage) is not an operating system.
- It was a WYSIWYG HTML editor and website administration tool developed by Microsoft.
- It allowed users to create and manage websites without requiring extensive knowledge of HTML.
Conclusion:
- Among the given options, only MSDOS is an operating system.
- MSDOS was a widely used command-line operating system developed by Microsoft for IBM-compatible personal computers.