Exam-style question
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Which register holds the instruction that is currently being decoded or executed?.
- A.Memory address register
- B.Program counter
- C.Current instruction register
- D.Memory data register
Model answer
What a good answer should say
- Current instruction register
Explanation
Why this works
The current instruction register (CIR) holds the instruction that has been fetched from memory while it is decoded and executed.
Common mistake
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