For interrupt-driven I/O, the MCU _____
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A. proceeds with execution of current task until an associated interrupt occurs
B. I/O request causes a flag bit in a status register to change
C. uses an interrupt loop
D. a and b
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An I/O subsystem is a part of the MCU _____
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A. defining software drivers
B. that handles a specific technique for handling I/O
C. hosting the man machine component for the MCU
D. all of the above
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A software driver is a/an _____
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A. subroutine that can be called by any program to can handle communications with a peripheral device
B. interrupt that can preempt any program to handle communications with a peripheral device
C. application program using one or more hardware peripheral devices
D. all of the above
Answers
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Posted 20 May 2017 03:05 AM
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