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Which of the following correctly describes the CPU's instruction cycle?

easy📝 Factual Q12 of Q15
Intro to Computing - How Hardware Works
Which of the following correctly describes the CPU's instruction cycle?
ADecode, store, fetch
BExecute, fetch, store
CFetch, decode, execute
DStore, execute, decode
Step-by-Step Solution
Solution:

  1. Step 1: Recall the CPU instruction cycle steps

    The CPU follows a cycle: it first fetches the instruction, then decodes it, and finally executes it.

  2. Step 2: Check the order of steps

    Only Fetch, decode, execute lists the steps in the correct order: fetch, decode, execute.

  3. Final Answer:

    Fetch, decode, execute -> Option C

  4. Quick Check:

    Instruction cycle = fetch -> decode -> execute [OK]
Quick Trick: Remember: Fetch before decode, then execute [OK]
Common Mistakes:
MISTAKES
  • Mixing up the order of steps
  • Including 'store' as a CPU cycle step
  • Confusing execution before fetching

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