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Input/Output of data to/from a system. This usually implies file storage or network communication, but may also mean interaction with a user through a user interface.

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From Section 5.1.4 Direct Memory Access in Modern Operating Systems by Andrew S. Tanenbaum, Herbert Bos, 2014, To simplify the explanation, we assume that the CPU accesses all devices and memory …
asked Feb 8 '15 by Tim