Figure 1 shows a register-transfer flow diagram detailing how data and addresses move between registers and memory during the Fetch stage of the instruction cycle.
State the name of the CPU register represented by the question mark (?) in Figure 1.
Systems architecture Questions
Practise AQA GCSE Computer Science Systems architecture with exam-style questions for GCSE Computer Science. 42 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.