COMPUTER

This article provides some important questions related to the computer.

1. What is a computer?

Ans: A computer is an electronic machine that takes input from the user, processes the given input and generates output in the form of useful information.

2. What is the full form of IPOS?

Ans: Input Processing Output Storage.

3. What is data?

Ans: Data refer to the raw details that need  to be processed to generate some useful information.

4. What is program?

Ans: Programs refer to the set of instructions that can be executed by the computer in sequential and non sequential manner.

5. What is CPU?

Ans: CPU is the processor of the computer that is responsible for controlling and executing instructions in the computer. It is considered as the "brain" of the computer.

6. What is monitor?

Ans: It is a screen,  which displays information in visual form,  after receiving the video signals from the computer.

7. What are the main characteristics of a computer?

Ans: 

a) Speed

b) Storage capacity

c) Accuracy 

d) Reliability

e) Diligence 

f) Versatility

g) Plug and Play 

h) Secrecy .

8. What is GIGO?

Ans: Although computers are highly reliable and versatile machines , they do possess certain limitations . Since  the computers are capable of doing only what they are instructed to do,  any wrong instruction or any wrong data may result in erroneous output . This is popularly known as Garbage - In Garbage - Out".

9. Who produced stepped reckoner?

Ans: Von Leibriz.

10. Who developed napier bones?

Ans: John Napier.

11. What is the name of first calculating device?

Ans: Abacus.

12. Who is considered as the father of modern computer?

Ans: Alan Turing.

13. Who designed MARK I?

Ans: Howard Aiken .

14. Who developed the first electronic digital programmable computer?

Ans: Alan Mathison.

15. Who developed 'difference engine'?

Ans: Charles Babbage.

16. What is transistor?

Ans: Transistor is a semiconductor device that is used to increase the power of the incoming signals by preserving the shape of the original signal.

17. What is microprocessor?

Ans: Microprocessor is an integrated circuit that contains the entire central processing Unit of a computer on a single chip.

18 . What is the full form of WORM?

Ans: Write Once Read Memory.

19. What is the full form of UPS?

Ans: Uninterruptible Power Supply.

20. What is the full form of OMR?

Ans: Optical Mark Reader.