AQA GCSE Computer Science (8525)Specification point 3.4.5

AQA 8525 3.4.5: Systems architecture

The free BugBot lessons that teach this point, a robot to try it on, and the past-paper questions that test it.

Lessons that teach it

1. F9.4 The CPU and fetch-execute Logic and computer systems
   The ALU, control unit, registers and buses, and tracing the fetch-decode-execute cycle.
2. F9.5 CPU performance Logic and computer systems
   Clock speed, cores and cache, measured with models.
3. F9.6 Memory Logic and computer systems
   RAM, ROM, cache and virtual memory.
4. F9.7 Secondary storage Logic and computer systems
   Magnetic, optical, solid state and cloud storage, and choosing between them.
5. F9.8 Embedded systems: inside BugBot Logic and computer systems
   What makes a system embedded, the robot's three boards, and the sense-decide-act loop.

Try it on a robot

The task from F9.4 The CPU and fetch-execute, running here. Change the program and press Run.

The specification is AQA's own document; this page says which of our lessons teach point 3.4.5 and is not endorsed by the board.