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Discussion :: Microprocessors

  1. Which of the following pins are used in the microprocessor to request & acknowledge a DMA Transfer (Direct Memory Access)
    2. A.
    Ready & Wait
    B.
    Reset & Ready
    C.
    Hold & HLDA
    D.
    None of these

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    Answer : Option C

    Explanation :

    Hold & HLDA

    The Hold pin is an input that is used to request a DMA action & HLDA pin is an output that acknowledges the DMA action

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