Answered: What happens to the CPU when a software…

What happens to the CPU when a software makes a request for input/output (I/o)? What mechanism is used to inform the CPU that the 10 operation has been completed?

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter6: System Integration And Performance

Section: Chapter Questions

Problem 3VE

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Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

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What happens to the CPU when a software makes a request for input/output (I/O)? What
mechanism is used to inform the CPU that the IO operation has been completed?

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