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All questions of Hardware & Software for Class 5 Exam

Name the device which is used to record voice in a computer.  
  • a)
    Microphone
  • b)
    Modem
  • c)
    SMPC
  • d)
    Sound card
Correct answer is option 'A'. Can you explain this answer?

Madhavan Majumdar answered
Microphone

A microphone is a device used to record voice or sound into a computer. It is an essential tool for various purposes such as voice recording, video conferencing, gaming, and podcasting.

How does a microphone work?

A microphone converts sound waves into electrical signals that can be processed by a computer. It consists of a diaphragm, which vibrates when exposed to sound waves, and a coil or capacitor that converts these vibrations into electrical signals. These signals are then transmitted to the computer through a cable or wirelessly, depending on the type of microphone.

Types of Microphones

There are different types of microphones available, each with its own unique features and applications. Here are a few common types:

1. Dynamic Microphones: These microphones are durable and can handle high sound pressure levels. They are commonly used in live performances and recording studios.

2. Condenser Microphones: Condenser microphones are more sensitive and accurate in capturing sound. They require a power source, either from the computer or an external power supply. They are often used in studio recordings and broadcasting.

3. USB Microphones: USB microphones are designed to connect directly to a computer via USB port. They are easy to use and convenient for recording voiceovers, podcasts, and video chats.

4. Lavalier Microphones: Lavalier microphones, also known as lapel microphones, are small and clip onto a person's clothing. They are commonly used in presentations, interviews, and public speaking events.

Connecting a Microphone to a Computer

To record voice using a microphone on a computer, you need to connect it properly. The most common method is to plug the microphone into the microphone input or audio input port of the computer. This port is usually color-coded pink. Alternatively, if you are using a USB microphone, you can directly connect it to a USB port on your computer.

Conclusion

In conclusion, a microphone is the device used to record voice in a computer. It converts sound waves into electrical signals that can be processed by the computer. There are different types of microphones available, each with its own features and applications. Whether you are recording music, conducting online meetings, or creating podcasts, a microphone is an essential tool to capture high-quality audio on your computer.
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We can use ______________ for reading information from a CD.
  • a)
    Floppy drive
  • b)
    Pen drive
  • c)
    Mother board
  • d)
    CD drive
Correct answer is option 'D'. Can you explain this answer?

Neha Shah answered
CD Drive for reading information from a CD

CD Drive:
A CD drive is a peripheral device that is used to read data from CDs (Compact Discs). It is an optical drive that uses laser technology to read the data stored on the CD. A CD drive is an important component of a computer system that allows the user to access information from CDs.

Floppy Drive:
A floppy drive is a type of disk drive that was used to read and write data on floppy disks. However, it is an outdated technology and is no longer used in modern computers.

Pen Drive:
A pen drive is a small portable storage device that can be used to store and transfer data. However, it cannot be used to read data from a CD.

Motherboard:
A motherboard is the main circuit board of a computer system that connects all the other components of the system. It does not have the capability to read data from a CD.

Conclusion:
Therefore, the correct option for reading information from a CD is a CD drive.

What is the name of the TV looking device which allows you to see images?  
  • a)
    Keyboard
  • b)
    Monitor
  • c)
    Printer
  • d)
    Mouse
Correct answer is option 'B'. Can you explain this answer?

Atharva Saini answered
Monitor
A monitor is a TV-looking device that allows you to see images. It is an output device that displays visual information from the computer or any other connected device.

What is a monitor?
A monitor is a screen that displays the output of a computer or other electronic device. It is often referred to as a display screen or a visual display unit (VDU). Monitors come in various sizes and types, including LCD (liquid crystal display), LED (light-emitting diode), and CRT (cathode ray tube) monitors.

How does a monitor work?
Monitors work by receiving signals from the computer or device they are connected to and converting these signals into images that can be viewed on the screen. The computer or device sends digital or analog signals to the monitor, which then uses its display technology to light up pixels and create the images.

Types of monitors
- LCD monitors: These use a liquid crystal display technology to create images. They are thin, lightweight, and energy-efficient.
- LED monitors: These use light-emitting diodes to backlight the screen. They are similar to LCD monitors but provide better brightness and contrast levels.
- CRT monitors: These are older monitors that use cathode ray tubes to display images. They are bulky and consume more power compared to LCD and LED monitors.

Features of a monitor
- Screen size: Monitors come in various sizes, ranging from small screens for laptops to large screens for desktop computers or TVs.
- Resolution: The resolution of a monitor determines the sharpness and clarity of the displayed images. Higher resolutions provide more detailed visuals.
- Refresh rate: The refresh rate refers to how many times the monitor can update the displayed image per second. Higher refresh rates result in smoother motion.
- Connectivity options: Monitors may have various ports for connecting to computers or other devices, such as HDMI, VGA, DVI, or DisplayPort.
- Adjustable stand: Many monitors come with an adjustable stand that allows users to change the height, tilt, or rotation of the screen for optimal viewing comfort.

Conclusion
In summary, a monitor is the TV-looking device that allows you to see images. It receives signals from a computer or other devices and converts them into visual information that is displayed on the screen. Monitors come in different types, sizes, and have various features to cater to different needs and preferences.

Please select the odd one from the five major Hardware components of a desktop computer.
i. Monitor
ii. CPU/System Unit
iii. RAM
iv. Printer
v. Mouse & Keyboard
  • a)
    Monitor
  • b)
    Mouse & Keyboard
  • c)
    Printer
  • d)
    RAM & CPU/System Unit
Correct answer is option 'C'. Can you explain this answer?

Ankita Bajaj answered
Understanding the Odd One Out
In this question, we are asked to identify the odd one out from a list of five major hardware components of a desktop computer. The options provided are:
- Monitor
- CPU/System Unit
- RAM
- Printer
- Mouse & Keyboard
Identifying the Components
- Monitor: This is the display screen that allows users to see the output from the computer.
- CPU/System Unit: This is the central processing unit, which is the brain of the computer that performs calculations and processes data.
- RAM: Random Access Memory is the memory used by the computer to store data temporarily while it is in use.
- Printer: This device produces physical copies of digital documents, functioning independently of the computer itself.
- Mouse & Keyboard: These are input devices that allow users to interact with the computer.
Why the Printer is the Odd One
- Functionality: The printer is primarily an output device, while the others (monitor, CPU, RAM, mouse, keyboard) are essential components for operating the computer itself.
- Integration: All components except the printer are directly involved in the processing and execution of tasks within the computer system. The printer does not contribute to the computer's operations but rather outputs results.
- Connectivity: The printer operates as a peripheral device, meaning it connects to the computer but is not necessary for the computer to function. In contrast, the other components (CPU, RAM, and the monitor) are integral to the computer's core functionality.
Conclusion
Thus, option 'C', the printer, is the odd one out as it serves a different purpose compared to the other components that are crucial for the operation of a desktop computer.

The full form of CD (Hardware device) is  
  • a)
    Compact Disk
  • b)
    Computer Disk
  • c)
    Compact Drive
  • d)
    Computer Drive
Correct answer is option 'A'. Can you explain this answer?

Naveen Pillai answered
Compact Disk (CD)
The full form of CD, in the context of a hardware device, is Compact Disk. Below are some key points explaining the term:

Explanation:
- Compact Disk: A CD is a small, portable, round disk used to store and play back audio, video, and other types of data. It is read by a CD drive in a computer or standalone player.
- Storage: CDs can typically store up to 700 MB of data, making them a popular choice for distributing music albums, software programs, and other multimedia content.
- Types: There are different types of CDs, such as CD-ROMs (Read-Only Memory), which can only be read, and CD-RWs (Read-Write), which can be written to and erased multiple times.
- Usage: CDs were widely used in the past for software installation, music albums, and data backup. However, with the advent of USB drives and online streaming services, their popularity has declined in recent years.
In conclusion, a Compact Disk (CD) is a versatile storage medium that has played a significant role in the history of computing and multimedia.

Software is a __________ that works in a computer.
  • a)
    data
  • b)
    instruction
  • c)
    program
  • d)
    process
Correct answer is option 'C'. Can you explain this answer?

Rahul Verma answered
A computer program is a sequence of instructions for performing a task designed to solve specific problems. Each program instruction is designed to be executable by a computer. So we can say Software is a program that works in a computer.

USB stands for  
  • a)
    Universal Serial Bus
  • b)
    Universal Synchronous Bus
  • c)
    Uniform Serial Bus
  • d)
    Uniform Synchronous Bus
Correct answer is option 'A'. Can you explain this answer?

Atharva Ghoshal answered
USB stands for Universal Serial Bus.

Explanation:
The Universal Serial Bus (USB) is a widely used hardware interface for connecting peripherals (such as keyboards, mice, printers, cameras, and external storage devices) to a computer. It was developed to standardize the connection and communication between different devices and computers.

Key Points:
- USB stands for Universal Serial Bus.
- It is a hardware interface used for connecting peripherals to a computer.
- USB was developed to standardize the connection and communication between different devices and computers.

Universal:
The term "universal" in USB refers to the fact that it is designed to work with a wide range of devices, regardless of the brand, model, or operating system they use. USB allows for easy plug-and-play functionality, where devices can be connected or disconnected without the need to restart the computer.

Serial:
The term "serial" in USB refers to the way data is transmitted between devices. Unlike parallel interfaces, which send multiple bits of data simultaneously through separate wires, USB uses a serial communication method. This means that data is sent one bit at a time over a single wire, allowing for simpler and more efficient communication.

Bus:
In the context of computer hardware, a "bus" refers to a communication pathway that allows multiple devices to connect to a central hub or controller. The USB bus serves as a common pathway for data transfer between the computer and connected devices. It provides power, data transfer, and control signals to the peripherals.

Advantages of USB:
- Universal compatibility: USB is compatible with a wide range of devices, making it a versatile and widely adopted standard.
- Plug-and-play functionality: USB devices can be easily connected or disconnected without the need to restart the computer.
- High data transfer rates: USB supports high-speed data transfer, allowing for fast and efficient communication between devices.
- Power supply: USB provides power to connected devices, eliminating the need for separate power adapters in many cases.
- Expandability: USB supports the use of hubs, which allow multiple devices to be connected to a single USB port.

Conclusion:
USB (Universal Serial Bus) is a widely used hardware interface that allows for easy connection and communication between devices and computers. It provides universal compatibility, high data transfer rates, and plug-and-play functionality, making it an essential part of modern computer systems.

Which of the following is not a hardware?
  • a)
    Monitor
  • b)
    RAM
  • c)
    Speaker
  • d)
    Windows
Correct answer is option 'D'. Can you explain this answer?

Ashish Unni answered
Understanding Hardware vs. Software
In the context of computing, it's essential to differentiate between hardware and software.
What is Hardware?
- Hardware refers to the physical components of a computer system.
- These are tangible devices that you can see and touch.
Examples of Hardware Components:
- Monitor: A display screen that shows visual output from the computer.
- RAM: Random Access Memory, which is the computer's short-term memory used for processing tasks.
- Speaker: An output device that produces sound from the computer.
What is Software?
- Software, on the other hand, consists of the programs and applications that run on the hardware.
- It is intangible and includes operating systems, applications, and tools.
Windows as Software:
- Windows is an operating system developed by Microsoft.
- It provides the environment for hardware to operate and for users to run applications.
- Since it is a program that enables the hardware to function, it is classified as software, not hardware.
Conclusion:
- The correct answer to the question is option 'D' (Windows) because it is a software component, while the others (Monitor, RAM, Speaker) are hardware components.
- Understanding this distinction is crucial for anyone learning about computers and technology.

Which of the following is an INCORRECT match?  
  • a)
    Pentium5 – Scanner  
  • b)
    CRT – Monitor
  • c)
    QWERTY – Keyboard  
  • d)
    Laser – Printer
Correct answer is option 'A'. Can you explain this answer?

Ruchi Basu answered
Understanding the Incorrect Match
The question presents a list of terms and asks to identify the incorrect match. Let's analyze each option.
Option A: Pentium5 – Scanner
- Incorrect Match: Pentium 5 is a series of microprocessors developed by Intel, primarily used in computers for processing data.
- Scanner Definition: A scanner is a device that converts physical documents and images into digital format.
- Conclusion: Pentium 5 does not relate to scanners; hence, this option is incorrect.
Option B: CRT – Monitor
- Correct Match: CRT stands for Cathode Ray Tube, a technology used in older monitors and televisions.
- Conclusion: This match is correct as CRT is directly associated with monitor technology.
Option C: QWERTY – Keyboard
- Correct Match: QWERTY refers to the standard keyboard layout commonly used in English-speaking countries.
- Conclusion: This is a correct match, as QWERTY is indeed a type of keyboard layout.
Option D: Laser – Printer
- Correct Match: A laser printer uses laser technology to produce high-quality text and graphics on paper.
- Conclusion: This is also a correct match, as laser printers are well-known in the printing industry.
Summary
- The only incorrect match in the list is Option A: Pentium5 – Scanner.
- The other options (B, C, and D) are all correctly matched with their respective definitions.

Select the odd one out.
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'D'. Can you explain this answer?

Manognya .banerji answered
Except monitor, all the others are input devices. So option 'D' is correct and rest of the options are incorrect.

 Select the INCORRECT match.
  • a)
    OLED – 
  • b)
    Blu-ray –
  • c)
    Ergonomic – 
  • d)
Correct answer is option 'C'. Can you explain this answer?

Subset Academy answered
Option c) shows an Intel processor chip, which does not represent "Ergonomic." 
"Ergonomic" relates to the design of equipment or devices intended to maximize comfort, efficiency, and safety for users. It does not refer to an Intel processor chip, which is a microprocessor component. Therefore, option c) is an incorrect match.

Chapter doubts & questions for Hardware & Software - International Computer Science Olympiad Class 5 2025 is part of Class 5 exam preparation. The chapters have been prepared according to the Class 5 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 5 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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