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McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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I/O(1) See information operations.
(2) (Input/Output) The transfer of data between the computer's CPU and a peripheral device. Every transfer consists of input and output operations; hence the term "I/O." A transfer is either output from the CPU and input to the peripheral or output from the peripheral and input to the CPU. See PC input/output.
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