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input devices click to hear : input devices

Electronic devices used to transmit data and commands to a computer.
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bar code reader optical scanner CD/ROM player

bar code reader click to hear : bar code reader

Device that uses an optical scanning process to decode information contained in bar codes.

optical scanner click to hear : optical scanner

Equipment that converts a document’s graphics or texts into digital data.

CD/ROM player click to hear : CD/ROM player

Equipment that uses a laser beam to read data recorded on a compact disc.