Significance of Input-Process-Output Cycle

Q3. Briefly explain the significance of Input-Process-Output Cycle.

Ans. During the functioning of a computer. The first stage (things to work upon) is called input stage, the second stage (the actual work being performed) is called process stage and the third stage (the result) is called output stage. Certain input is needed to accomplish a task, a process is carried out on the input to obtain the output.

Every task follows this Input-Process-Output cycle (IPO cycle in short). A computer follows the I-P-O cycle that is; it needs certain input, carries out a process and produces the output.

Computer Overview – Short Question Answers

Q1. What is a computer?

Q2. Define and distinguish between data and information.

Q3. Briefly explain the significance of Input-Process-Output Cycle.

Q4. Briefly explain the basic architecture of a computer.

Q5. What do you understand by input unit? What is its significance? What does computer input consist of?

Q6. What is the function of CPU in a computer system? What are its subunits?

Q7. What functions are performed by the control unit? Can we call it the control centre of computer system? Why?

Q8. What functions are performed by the ALU? Is it an independent unit? If not, which unit does ALU work in coordination with?

Q9. Distinguish between Input unit and Output unit.

Q10. Distinguish between CPU and ALU.

Q11. What is the function of output unit in a computer system? Give example of some output devices.

Q12. What role does memory play in the functioning of computer system?

Q13. What is a bit? What is binary code?

Q14. Define each of the following:

(a) nibble

(b) byte

(c) kilobyte

(d) megabyte

(e) gigabyte

(f) terabyte.

Q15. What is the meaning of the term volatile primary memory? What can be done to overcome the problems of volatility?

Q16. Distinguish between internal and external memory.

Q17. Draw a block diagram of the main units of a computer hardware system.

Q18. What are the differences between hardware, software and firmware?

Q19. What are the software classifications? Discuss their functioning in brief.

Q20. What is the binary system used in the computers?

Q21. What is the difference between system software and application software?

Q22. How are human compared with respect to speed and capacity of information processing?

Q23. What are the advantages and disadvantages of using computers?

Q24. Explain briefly the major innovations of

(i) first generation computers,

(ii) second generation computers,

(iii) third generation computers,

(iv) fourth generation computers?

Q25. What is the Von Neumann architecture? Did it influence the making of computers? How?

Q26. Describe the stored-program concept and explain how it changed computer processing.

Q27. How are the computers of four different generations superior as compared to their previous models?

Q28. How are computers classified? How are they different from one another?

Q29. How is the microcomputer different from the other computers?

Q30. What are the four different types of computers based on their working methods?

Q31. Identify and discuss characteristics and uses of

(a) Minicomputers

(b) Mainframe computers, and

(c) Supercomputers.

Q32. Compare microcomputers with minicomputers and mainframe in terms of size, cost and capabilities.

Q33. List at least three advantages of computer data processing over manual methods.

Q34. What do you understand by the term ‘Super Computers’? Give the name of a supercomputer installed in India.

Q35. How are digital, analog and hybrid computers different from one another?