INTRODUCTION TO COMPUTER
The word
computer comes from the word “compute” which
means to calculate. Hence people usually considered as a computer to be a
calculating device that can perform arithmetic and logic operation at a high
speed.
A computer can store, process, and
retrieve data whenever we desired. So computer is also called data processor.
Application
of computer:
People
use computers in many ways.
1. Word processing
2. Internet
3. Desktop publishing
4. Computer in medicine
5. Mathematical calculation
6. In banking
7. Travels
8. Defense
9. E-learning
10. Examination
11. Computer in business
12. Certificate
13. A.T.M
14. Marriage
15. News
16. Government office
Definition
of computer:
Computer
is an electronic calculating device that accepts data as input process in the
C.P.U and gives out the information as output device.
INPUT
Keyboard
mouse
PROCESS
C.P.U
OUTPUT
monitor
printer
Data:
data is a raw
material which is a collection of facts, figure, number, alphabets etc.
Information: when data is converted into
meaningful format then it is called information.
Note: information can be data but
data can’t be information
Input: It is a process in which data
can be inter into the computer system.
Output: it is process in which
information can be display.
