Quiz: What Registers Do (Big Picture)
OCR GCSE J277 Computer Science specification
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Welcome! Building on your knowledge of the CPU and the fetch–decode–execute cycle, this quiz will test your understanding of what registers do and their role in the CPU.
Which register holds the address of the next instruction to be executed?
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The {{blank0}} stores the result of calculations or operations carried out by the ALU.
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Which registers are involved in the fetch-decode-execute cycle? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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What is the main role of the Memory Data Register (MDR)?
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The {{blank0}} is the register that holds the memory address of the data or instruction being accessed.
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If the Program Counter (PC) starts at address 100 and increments by 2 for each new instruction, what is the address after 3 increments?
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Match the items on the left with their correct pairs on the right
Which register temporarily holds data read from or written to memory?
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Which of the following are purposes of the Accumulator register? (Select all that apply)
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