The method of accessing the I/O devices by repeatedly checking the status flags is ___________(a) Program-controlled I/O(b) Memory-mapped I/O(c) I/O mapped(d) None of the mentionedThis question was posed to me in a national level competition.This interesting question is from Accessing I/O Devices in division Input/Output Organisation of Computer Architecture

The method of accessing the I/O devices by repeatedly checking the sta

1.	The method of accessing the I/O devices by repeatedly checking the status flags is ___________(a) Program-controlled I/O(b) Memory-mapped I/O(c) I/O mapped(d) None of the mentionedThis question was posed to me in a national level competition.This interesting question is from Accessing I/O Devices in division Input/Output Organisation of Computer Architecture
Answer» Correct CHOICE is (a) Program-controlled I/O Easy EXPLANATION: In this method, the PROCESSOR constantly CHECKS the STATUS flags, and when it finds that the flag is set it performs the appropriate operation.

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