All computer peripheral devices which use to input data and instructions to the computer are called Input Devices.A Input devices accept data and instructions from the user and convert information or data in to a form which can be understood by the computer.
A good input device should provide accurate, timely and useful data to the main memory of the computer for processing.
1. Keyboard
2. Mouse
3. Light Pen
4. Trackball
5. Joystick
6. Scanners
7. Optical Mark Reader
8. Optical Character Reader
9. Barcode Reader
10. Magnetic Ink Character Recognition
11. Voice Recognition Systems
12. Digital Cameras