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-execute cycle, let's test your knowledge of what registers do and their importance!
Which register holds the address of the next instruction to be fetched?
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Which of the following are roles of registers? (Select all that apply)
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The {{blank0}} temporarily holds the results of calculations performed by the ALU.
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Match the items on the left with their correct pairs on the right
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If the Program Counter holds the value 1000 and the next instruction is at 1004, what value will the Program Counter increment to after fetching the instruction?
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Match the items on the left with their correct pairs on the right
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Why are registers faster than RAM?
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The {{blank0}} is responsible for keeping track of the location of the next instruction that the CPU needs to execute.
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Match the items on the left with their correct pairs on the right
Which of the following is NOT a register?
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