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CPU, memory, and buses

CPU, memory, and buses

Labelled diagram of a CPU linked to RAM by address, data and control buses, showing the control unit, ALU, registers, cache, clock, and the fetch-decode-execute cycle A computer system runs programs by storing instructions and data, then processing them. The CPU is the main processor, while main memory holds what the CPU needs right now.

Systems architecture Lesson

  1. GCSE
  2. /Computer Science
  3. /Systems architecture

Step-by-step lessons on AQA GCSE Computer Science Systems architecture. Each one builds up to exam-style questions. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons