Sunday 7 September 2014

What is computer

What is computer?

                                                computer is an electronics device ,  in which we can get the exact output after giving the exact input. Mean you get the output according to your input. The inputting method is done by some input device like keyboard, mouse, light pen, joystick, scanner, OMR, OCR, microphone, bar code reader etc and the output devices like Monitor, printer, plotter. projector, sound card speaker.


There are some of the Limitation and Characteristics of computer discussed below--


Limitation of computer:-     Computer can do any operation but actually this is done by human beings or user. Computer can do only what is designed or programmed to do. It cannot correct input data. It cannot think and cannot derive meanings from objects. Computer does have the another some limitation are :-


 I:- No Self Intelligence:
                                                           Computer depend on human being to perform a task. Without human being i cannot do any operation or any task. It does not have any intelligence its own. User make a program give that program to computer as a input then a computer can perform on that program and give a output to user according to their input. Without a program computer is nothing. A program is a set of instructions. Computer only follows these instructions. If the instructions are not exact the output will not correct.

II:- No thinking Power:-
                                                           Computer can not think itself. In case of artificial intelligence that shows computer can think. But the thing is that the program inside is also programmed by humans. Set of instruction in the case of artificial intelligence is provided by humans on which it depend.

III:- No feelings:-
                                                          Computer can not feel like a human.

IV:- No Learning power :-
                                                          Computer has no learning power. User give the instruction to the computer that what to do. It can not proceed next if user do not give it any instructions .


V:- Self Care :- 
                                                        Computer cannot care itself like a human. For care it totally depend on humans beings.


Characteristics of Computer are:- 

-Speed.
-Storage.
-Accuracy.
-Diligence. 
-Versatility.


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