What is Programmed IO Operating System?

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Programmed IO Definition

  • A form of IO in which the CPU issues an IO command to an IO module.

    Operating Systems by William Stallings

Programmed IO Explanation

Programmed IO is a way of moving data between devices in a computer in which all data must be passed through the processor. In programmed IO, the CPU stays in the program loop until the IO unit indicates that is ready to transfer data.

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