Exam-style question
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What is the primary role of an interrupt?.
- A.To permanently stop the processor
- B.To request that the processor temporarily deal with an event
- C.To increase the clock speed of the processor
- D.To replace the operating system
Model answer
What a good answer should say
- To request that the processor temporarily deal with an event
Explanation
Why this works
An interrupt causes the processor to temporarily change from executing the current program so that it can deal with an event using an interrupt service routine.
Common mistake
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