Computer Hardware Components Class 7 ICSE (30 Questions and Answers)
 |
| Computer Questions and Answers (J K Online Classes) |
1. What is a CPU, and what is its role in a computer?
Answer: The CPU, or Central Processing Unit, is the brain of the computer. Its role is to execute instructions and perform calculations.
2. What does RAM stand for, and what is its function in a computer?
Answer: RAM stands for Random Access Memory. It is used for temporarily storing data that the computer is actively using.
3. Describe the difference between RAM and a hard drive.
Answer: RAM is temporary and loses its data when the computer is turned off, while a hard drive provides permanent storage for data.
4. What is the motherboard, and why is it essential in a computer?
Answer: The motherboard is the main circuit board that connects all the computer's hardware components. It's essential because it facilitates communication between components.
5. Explain the purpose of an HDD (Hard Disk Drive) in a computer.
Answer: An HDD is used for long-term storage of data, including the operating system, software, and user files.
6. How does an SSD (Solid-State Drive) differ from an HDD?
Answer: SSDs use flash memory for storage and are faster and more reliable than HDDs.
7. Name three common input devices in a computer.
Answer: Keyboard, mouse, and scanner are common input devices.
8. What is the primary function of a computer mouse?
Answer: The mouse is used for pointing and clicking to interact with the computer's graphical user interface.
9. Describe the function of a computer monitor.
Answer: A monitor displays visual output, such as text, images, and videos, from the computer.
10. What is the role of a printer in a computer system?
Answer: Printers produce hard copies of documents, images, and graphics.
11. What are expansion cards, and how do they enhance a computer's capabilities?
Answer: Expansion cards are additional hardware components that can be added to a computer to add functionality, such as graphics cards for better graphics performance.
12. What is the purpose of a power supply unit (PSU) in a computer?
Answer: The PSU provides electrical power to all the computer components by converting electricity from the wall outlet.
13. Name three common ports found on a computer and their functions.
Answer: USB ports for connecting peripherals, HDMI ports for video output, and audio jacks for headphones and microphones.
14. Why is a cooling system important in a computer?
Answer: A cooling system prevents the computer from overheating by dissipating the heat generated during operation.
15. What are the basic components of a computer system?
Answer: The basic components of a computer system include the CPU, motherboard, RAM, storage devices, input devices, output devices, and power supply.
16. How does data storage in RAM differ from storage in a hard drive?
Answer: Data stored in RAM is temporary and volatile, while data on a hard drive is permanent and non-volatile.
17. What is the function of a graphics card in a computer?
Answer: A graphics card is responsible for rendering images and videos and is essential for gaming and graphical applications.
18. Why is it important to have various ports and connectors on a computer?
Answer: Ports and connectors allow users to connect external devices and expand the computer's functionality.
19. Explain the difference between input and output devices in a computer.
Answer: Input devices are used to enter data into the computer, while output devices display results or output from the computer.
20. How does a scanner convert physical documents into digital format?
Answer: A scanner uses sensors to capture the content of physical documents, converting them into digital images that can be stored on a computer.
21. What is the main function of the CPU in a computer?
Answer: The CPU processes instructions and performs calculations, making it the primary component responsible for executing tasks.
22. Why do computers need both RAM and storage devices?
Answer: RAM provides fast, temporary storage for data actively used by the computer, while storage devices like hard drives store data for the long term.
23. What is the role of the power supply unit (PSU) in a computer system?
Answer: The PSU converts electrical power from the wall outlet into the correct voltage and current needed by the computer's components.
24. How does an SSD differ from an HDD in terms of speed and durability?
Answer: SSDs are faster and more durable than HDDs because they use flash memory instead of spinning disks.
25. Why is it essential for a computer to have a cooling system?
Answer: A cooling system prevents the computer from overheating by dissipating the heat generated by the CPU and other components.
26. What is the function of an expansion card and give an example of one.
Answer: An expansion card adds specific functionality to a computer. An example is a graphics card that enhances graphics performance.
27. Name two common types of input devices for computers.
Answer: Two common input devices are the keyboard and mouse.
28. What are the primary functions of output devices in a computer?
Answer: Output devices display text, images, and audio generated by the computer.
29. Why is the motherboard often referred to as the computer's "central hub"?
Answer: The motherboard connects and facilitates communication between all the computer's hardware components.
30. What happens to data stored in RAM when the computer is turned off?
Answer: Data stored in RAM is volatile and gets erased when the computer is turned off, which is why it's essential to save important data to a storage device.
🔴Beware of cyber-fraudulent & cyber-crime🔴
){kind=link}
0 Comments