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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.
Examples include: text, images, sound, or video displayed on a monitor or through speaker as well as text or Braille from printers or embossers. Input Device â any device that enters information into a computer from a external source. Examples include: keyboards, touch screens, mouse, trackballs, microphones, scanners, etc. Processing Device â the electronics that process or transform information provided as an input to a computer to an output.