1. Input Devices Keyboards (Notes in Text)

2. The keyboard is an important peripheral that is used as an input device of a computer and many other devices, and is used to enter letters, numbers and other special function keys, which are used for some special functions. Keyboards are available for desktop and laptop computers, PDAs and smart phones.

3. Usually, there are around 110 keys on a computer keyboard. The different types available, depending on the layout, are, QWERTY and AZERTY. The QWERTY keyboards are most commonly used nowadays and have the six alphabets (Q,W,E,R,T,Y) in the first row. The AZERTY keyboards are used primarily in the French countries.

4. Braille Keyboard

5. Concept Keyboard

6. Left Handed Keyboard

7. Virtual/Projection Keyboard