FDE Stage Comparison
Part of Fetch-Decode-Execute Cycle · GCSE GCSE Computer Science revision
This comparison covers FDE Stage Comparison within Fetch-Decode-Execute Cycle for GCSE Computer Science. Revise Fetch-Decode-Execute Cycle in 3.4 Computer Systems for GCSE Computer Science with 16 exam-style questions and 12 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 8 of 10 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 8 of 10
Practice
16 questions
Recall
12 flashcards
FDE Stage Comparison
| Stage | What Happens | Registers Changed | Component |
|---|---|---|---|
| FETCH | Get instruction from memory | PC (increments), MAR, MDR, CIR | Control Unit + Memory |
| DECODE | Interpret instruction meaning | None | Control Unit |
| EXECUTE | Perform the operation | ACC (if calculation), PC (if branch) | ALU or CU |
Keep building this topic
Read this section alongside the surrounding pages in Fetch-Decode-Execute Cycle. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Fetch-Decode-Execute Cycle
What does FDE stand for in computer science?
Describe the three stages of the FDE cycle.
Quick Recall Flashcards
16 questions on Fetch-Decode-Execute Cycle — practise free
Instant marking, adaptive difficulty, and 12 spaced repetition flashcards. Free until your GCSEs.
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