These are concise, structured revision notes for the OCR A-Level Computer Science (H446) topic on the structure and function of the processor. They cover key specification content in a clear and exam-focused format, designed to support quick revision and improve understanding of core concepts.



The notes include explanations of the CPU components (ALU, CU, registers), the fetch–decode–execute cycle, and the Von Neumann architecture, alongside comparisons with the Harvard architecture. They...