Cyber Class 5 Memory and Operating Systems

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

Which of the following register holds a data value that is being stored to or retrieved from the memory location?

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Answer: C. Memory data register

The Memory Data Register acts as a buffer that holds the actual data or instruction being transferred between the CPU and the memory. When the CPU reads from memory, the data is placed in the MDR; when it writes to memory, the CPU puts the data in the MDR first.

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