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 knowledge of what registers do!
Which register holds the address of the next instruction to be executed?
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Which of the following registers store data? (Select all that apply)
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The {{blank0}} is used to store the result 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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Which register acts as a temporary storage for data fetched from memory?
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Match the items on the left with their correct pairs on the right
Which of the following are characteristics of CPU registers? (Select all that apply)
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What is the main purpose of the Memory Data Register (MDR)?
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How many bits are needed to represent a register that can store up to 256 unique values?
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The {{blank0}} is responsible for storing the address of the memory location to be accessed, while the {{blank1}} stores the actual data being transferred.
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