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Input device. A common computer input device, a keyboard. A user presses a key which transfers information to a computer. In computing, 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 keyboards, mouse, scanners, digital cameras and joysticks.
Keyboard. 1  is an input device that enables the user to enter characters (letters, numbers and symbols) into a computer. 2  is a hand held pointing device that is classed as a manual input device. 3  is an input device which is mostly used for playing computer games such as flight simulators.