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Discussion :: Microprocessors

  1. In 8279 status word, when data is read then which of the following pins are set to low, & in write to the display RAM then which of the following pins are set to low
    2. A.
    Ao, CS, RD & Ao, CS, WR
    B.
    Ao, CS, WR & Ao, CS, RD
    C.
    Ao, RD & CS, WR
    D.
    CS, RD & Ao, CS

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    Answer : Option A

    Explanation :

    Ao, CS, RD & Ao, CS, WR

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