Systems ArchitectureLow Exam FrequencyOCR

Program Counter & Accumulator

Revise Program Counter & Accumulator in Systems Architecture for GCSE Computer Science with 15 exam-style questions and 12 flashcards. This topic appears less often, but it can still pick up marks when it appears in mixed-topic papers.

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The Bookmark and the Whiteboard

Introduction 2

Deep Dive: Why These Registers Are Critical

Deep Dive 3

Program Counter (PC) - The Instruction Tracker

Key Facts 4

Accumulator (ACC) - The Result Holder

Key Facts 5

PC and ACC in the FDE Cycle

Diagram 6

Comparison: PC vs ACC

Comparison 7

Exam Tips - PC and Accumulator

Exam Tips

Sample Flashcards

What does PC stand for?

Program Counter

What does ACC stand for?

Accumulator

Sample Questions

What does the Program Counter (PC) store?

A. The result of the last arithmetic operation
B. The address of the next instruction to be fetched
C. The current instruction being decoded
D. The data retrieved from memory

1 markfoundation

Explain what happens to the Program Counter during the fetch stage of the FDE cycle.

2 marksstandard

exam-style questions

revision flashcards

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Fetch-Decode-Execute Cycle