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4 cards from this section. Quick, good the night before a test.
What is an interrupt?
Think about when the CPU needs to react quickly.
What does the program counter (PC) do?
Consider it as a pointer to the current instruction.
What is the purpose of an interrupt?
Think about what happens when you get a notification on your phone.
The value of the Program Counter (PC) is saved when?
Consider a bookmark in a book.
You have a program that executes 10 instructions before an interrupt occurs. Describe in detail how the CPU manages the transition from the executing state back to its original state after servicing the interrupt.
Think about how a book would save your place so you can return easily.
Suppose the ICC changes from 00 to 10 to 01 and finally to 11 as an instruction is being processed. Explain each phase this instruction undergoes during execution.
Map out each stage like stepping stones across a stream.
5 more questions in this section. Enroll free to practise them all.
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