It may be stupid to ask you this question, as you are in front of
the computer itself! And perhaps reading this article, that too from
Anyways, let us see what actually, a computer is, now...
A computer is an electronic programmable machine that takes
input and manipulates the input based on the written programs,
which is nothing, but, a set of instructions and provides
output in the required format.
The computer has got its own language using which it communicates
with the user and handles instructions and gives the required output.
The language spoken by the computer is known as Binary language or
is also called as machine language. This language has only two numbers,
0 and 1. Combination of these two numbers gives special meaning to
it and the user will be able to understand the meaning in his required
format. Giving special meaning to something is known as “Conversion”.
The binary language spoken by the computer is converted to give English
characters and boxes and pictures which we are seeing here.
Parts of a computer :
Like our body, which has got different parts, like hands, eyes, mouth,
nose, legs, etc., computers too, do have got parts. These parts are
divided into 4 sections, just like humans have face, chest, abdomen,
- Input devices
- Central Processing Unit box or CPU box
- Storage devices
- Output devices
Input devices :
As name indicates the input devices used to feed input to the computer
by any means. Keyboards, Mouse, Microphones, Scanners and Sensors
etc. are the various input devices.
Central Processing Unit (CPU) box :
CPU box or the System box is the actual computer. Without
it, it is silly to call the unit as a computer. By my own experience,
I have found many people calling the combination of monitor, keyboard,
and mouse as computer! But, that’s not so. Monitor, keyboard
and mouse will remain dead unless a system box is connected to it.
Technically speaking, CPU is one among the major components in a computer
system. It is the activity center for all the operations that are
taking place in the computer. It is also known as the brain of the
Storage devices :
Storage devices are the devices, which are mainly used to store the
data in the digital format, on a particular storage medium such as
hard disk, CD’s, DVD’s.
Output devices :
An output device is an device that gives output, which is emerged
out from the computer, as a result of executing some of the instructions.
The output devices are Monitors, Printers, Speakers, and Headphones
and so on.
The above said components will form a basic computer. The computer
can usually perform complex mathematical calculations within fraction
of a second. This feature perhaps makes computers faster than human
brain. But, whatever it may be. Human brain is always intelligent
than a computer as the computer itself is programmed by human brain!
Now, can you guess a full form for the word "
C O M P U T E R " ?...