Ocr gcse computer science - Study guides, Revision notes & Summaries

ocr GCSE Computer Science J277-02 May2023 Question Paper.

what is the purpose of the CPU? to process data by following the fetch-decode-execute cycle, it's incharge of searching, sorting, calculating and decision making what happens at the fetch stage? the CPU fetches data and instructions from RAM and then stores them in it's own temporary memory called registers Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:00 Full screen what happens at the decode stage? the CPU und...

ocr GCSE Computer Science J277-01 May2023 Question Paper.

CPU Central Processing Unit: The main part of the computer, consisting of the registers, ALU and control unit. Von Neumann Architecture Traditional computer architecture that forms the basis of most digital computer systems. Instructions are fetched, decoded and executed one at a time. Brainpower Read More MAR Memory Address Register: Holds the address of data ready for use by the memory data register. or the address of an instruction passed from the program counter. Step 2 ...