engineering computer science MCQ #262

In a computer system, what is the purpose of the 'MDR' (Memory Data Register)?

engineering computer science MCQ #262

  1. Question 1

    Q1. In a computer system, what is the purpose of the 'MDR' (Memory Data Register)?

    • A) To store the address of the memory location being accessed
    • B) To store the data being transferred between memory and CPU
    • C) To store the instruction being executed
    • D) To store the status of the CPU

    Answer: To store the data being transferred between memory and CPU

    Explanation: MDR holds the data being transferred between the CPU and memory, acting as a buffer for data exchange.