A peripheral device whose purpose is to allow the user to provide input to a computer system. Examples of input devices are keyboards, mice, joysticks, and styluses. See also peripheral.
Device for entering information into a computer. Input devices include keyboards, joysticks, mice, light pens, touch-sensitive screens, graphics tablets, speech-recognition devices, and vision systems. Compare output device.
Input devices that are used commercially—for example, by banks, postal services, and supermarkets—must be able to read and capture large volumes of data very rapidly. Such devices include document readers for magnetic-ink character recognition (MICR), optical character recognition (OCR), and optical mark recognition (OMR); mark-sense readers; bar-code scanners; magnetic-strip readers; and point-of-sale (POS) terminals. Punched-card and paper-tape readers were used in earlier commercial applications but are now obsolete.