Q1. What is a computer? What are its characteristics?

Q2. Briefly explain the significance of input process output cycle.

Q3. Briefly explain the basic architecture of the computer.

Q4. What do you understand by input unit? What is its significance? What does computer input consist of?

Q5. What is the function of CPU in a computer system? What are its sub units?

Q6. What functions are performed by the control unit? Can we call it the control center of a computer system? Why?

Q7. What functions performed by the ALU? Is it an independent unit? If not, which unit does ALU work in coordination with?

Q8. Distinguish between

  1. Input Unit and Output Unit,
  2. CPU and ALU,
  3. Data And Information.

Q9. What is the function output unit in a computer system? Give examples of some output devices.

Q10. What role does memory play in the functioning of a computer system?

Q11. What is a bit? What is a binary code?

Q12. Define each of the following:
a.) Nibble,
b.) Byte,
c.) Kilobyte,
d.) Megabyte,
e.) Gigabyte,
f.) Terabyte. 

Q13. What is the meaning of the term volatile primary memory? What can be done to overcome the problems of volatility?

Q14. Distinguish between internal and external memory.

Q15. Draw a block diagram of the main units of a computer hardware system.

Q16. What is the difference between hardware, software and firmware?

Q17. What are the software classifications? Discuss their functioning in brief.

Q18. Explain briefly hardware and software.

Q19. What are the advantages and disadvantages of using computers?

Q20. How are computers classified? How are they different from one another?

Q21. What do you understand by the term ‘Super Computers’? Give the name of a supercomputer installed in India.

Q22. What are Ram and ROM? How are there alike? How are they different?

Q23. What are optical mark reader? How are they is used for data input?

Q24. What does MICR stands for? Who uses MICR? What are the advantages and disadvantages of MICR?

Question 25. Give an example of Mark sensing. When is mark sensing useful, and when it is difficult to use?

Q26. How is optical character recognition OCR used for data input ? What are the advantages and disadvantages of OCR?

Q27. How is a light pen used? Is it an input or output device?

Q28. Name types of input devices. In each case briefly describe the purpose of the device and how it is operated.

Q29. What are VDU and LCD?

Q30. What is a plotter? What is its principle use?

Q31. Name three types of output devices. In each case briefly describe the purpose of the device and how it operates.

Q32. Write brief notes on each of the following types of printer. Make clear the difference between them in terms of speed, cost and method of operation and suggest suitable applications.

  1. Inkjet Printer,
  2. Dot Matrix Printer,
  3. Laser Printer.


  1. What is an impact printer?
  2. Discuss the working of Dot Matrix printer.

Q36. What is control bus? How is it different from other buses?

Q37. Explain the role and purpose of data and address bus.

Q38. Why do you think USB ports are popular these days?

Q39. What is the difference between serial and parallel ports?

Q40. What is networking port? Name some well known ports with their port number.

Q41. What is a phone port?

Q42. What is memory card? Discuss briefly its types.