Quiz: What Registers Do (Big Picture)
OCR GCSE J277 Computer Science specification
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Building on what you've learned about the CPU and the fetch-decode-execute cycle, let's test your understanding of what registers do in a computer!
Which register holds the memory address of the next instruction to be executed?
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Which of the following are true about registers? (Select all that apply)
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The {{blank0}} temporarily holds the result of calculations made by the CPU's Arithmetic Logic Unit (ALU).
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Match the items on the left with their correct pairs on the right
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What does the Program Counter (PC) do?
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If the Program Counter starts at address 500 and increments by 1 after each instruction, what address will it hold after 3 instructions?
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Match the items on the left with their correct pairs on the right
The {{blank0}} temporarily holds data that is fetched from memory or is about to be sent to memory.
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Which register is used to store the address of data to be accessed in memory?
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