Q
Hard 3 Marks
Computer Studies Central Processing Unit (CPU)
Which register pair works together during memory access — one holding the address and one holding the data?
Explanation
MAR (Memory Address Register) holds the address of the memory location while MDR (Memory Data Register) holds the data being read from or written to that address. They work together for all memory access.
Reference: Computer Studies Textbook , Page 4
Hint
One register holds where to look the other holds what is found there.
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