KEYS ON KEYBOARD
A keyboard is an input device that resemble a typewriter, which is used to type text, numbers, symbols, commands and to give instructions to the computer.
Alphanumeric keys: These are used to type letters and numbers, the letters A – Z, a – z and the digital 0 – 9.
An input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboard, mouse, scanners, digital cameras and joysticks, etc.