SSC
COMPUTER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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b Which register is being described?Holds the memory address of the instruction for each cycle
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MAR
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MDR
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Accumulator
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Program Counter
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Explanation:
Detailed explanation-1: -The ‘MAR’ (Memory Address Register) is the CPU register that either stores the memory address from which data will be fetched to the CPU or the address to which data will be sent and stored. MAR holds the address of the location to be accessed from memory.
Detailed explanation-2: -A memory buffer register (MBR) or memory data register (MDR) is the register in a computer’s CPU that stores the data being transferred to and from the immediate access storage. It contains a copy of the value in the memory location specified by the memory address register.
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