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Computing (FOLDOC) dictionary (also found in English - English (Wordnet), )
input device
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hardware A peripheral used to transfer data from the
outside world into a computer system. Some input devices are
operated directly by the user, e.g. keyboard, mouse,
others are sensors or transducers which convert external
signals into data, e.g. using an ananlog to digitalconverter (this would also be true of a microphone). Other
kinds of inputs are really one half of a bidirectional link
with another computer or storage device, e.g. serial line,
SCSI interface.