Question

Why do we use register instead of memory?

Answer 1

Registers hold the operands or instruction that CPU is currently processing. Memory holds the instructions and the data that the currently executing program in CPU requires. ... Register holds the small amount of data around 32-bits to 64-bits. Memory of the computer can range from some GB to TB.

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Answer 2

Explanation:

Registers hold the operands or instruction that CPU is currently processing.

Memory holds the instructions and the data that the currently executing program in CPU requires. ... Register holds the small amount of data around 32-bits to 64-bits. Memory of the computer can range from some GB to TB.