Introduction to computer to computer

INTRODUCTION TO COMPUTER:

Computer is an electronic device that takes input from user, process it , store it , if necessary display output.
It is the very essential parts of 21 century. its important is growing very much. without computer we cannot imagine our modern world. it's are is very widely. it's area is listed below:
1. Office
2. Home
3. Hospital
4. Aircraft
5. Science investigation
6. School
7. Business
8. Industry
9. Hotel
10. Defense and military force etc many more;