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IT GACE Computer Science Practice Test

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Which register in the ALU holds data temporarily during processing?
Correct Answer:
Accumulator
Explanation:
The working register that holds data being processed and the results of arithmetic or logic operations is the accumulator. It acts as the temporary storage the ALU uses for operands and for the outcome of each calculation, making subsequent steps able to use the latest result without reloading from memory. The data bus is a pathway for moving data between CPU and memory or I/O, not a storage area inside the CPU. The program counter tracks the address of the next instruction to fetch, guiding the sequence of operations rather than holding data for processing. A memory manager isn’t a standard CPU register used for immediate processing. So the accumulator is the correct choice because it is the dedicated internal register that the ALU uses to hold data during processing.

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