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2 cards from this section. Quick, good the night before a test.
What does the program counter do?
Think about where instructions come from.
Which register temporarily holds data being fetched from memory?
It's involved in the reading of instructions.
What does the program counter (PC) do?
Remember what the PC signifies in the instruction cycle.
True or False: The control unit can execute instructions directly without assistance from other components.
Think about its role in the fetch and execute cycles.
Describe how an interruption from an input/output operation could affect the fetch cycle timing. What adjustments might the control unit need to make?
Think about what happens when a task takes longer than expected.
If the instruction sequence in memory is unusually large, how might this impact the efficiency of the fetch cycle? Consider both hardware and software perspectives.
Consider the balance between memory retrievals and processing speed.
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