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  1. The circuit shown in the figure converts

    2. A.
    BCD to Binary code
    B.
    Binary to excess - 3 code
    C.
    Excess - 3 to Gray
    D.
    Gray to Binary

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    Answer : Option D

    Explanation :

    Let input is 1 1 0 1

    y1 = x1

    y2 = x2 ⊕ x1 ⇒ 1 ⊕ 1 = 0

    y3 = x3 ⊕ x2 = 0 ⊕ 0 = 0

    y4 = x4 ⊕ x3 = 1 ⊕ 0 = 1

    if input is gray then y1 y2 y3 y4 will be Binary.

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