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JEE Main & Advanced Physics Semiconducting Devices Question Bank Digital Electronics

  • question_answer
    The truth-table given below is for which gate [CBSE PMT 1994, 98 2002; DPMT 2002; BCECE 2005]            A   0     0     1     1            B   0     1     0     1            C   1     1     1     0

    A)            XOR                                         

    B)            OR

    C)            AND                                         

    D)            NAND

    Correct Answer: D

    Solution :

                       For ?NAND?      gate \[C=\overline{A.B}\] i.e. \[\overline{0.0}=\bar{0}=1\], \[\overline{0.1}=\bar{0}=1\] \[\overline{1.0}=\bar{0}=1\], \[\overline{1.1}=\bar{1}=0\]


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