1. By Asma Khalil

2.  As now a days world is known as the global village. We can share our ideas through out the world and in this mean computer helps us a lot. With the help of computer we can communicate through out the world. Different input and output devices are attached with the computer for data entry and receiving purpose. Thus these devices helps us in the communication process.

3.  Input devices:- Input devices are used to enter data in to the computer for processing.  Output devices:- Output devices are used to give the result to the user after processing the data provided to the computer.

4.  Input devices:- Keyboard Mouse Joystick Scanner  Output devices:- Monitor Projector Printe r