12th Class Physics Sample Paper Physics Sample Paper-7

  • question_answer
    The following truth table gives the output of a 2-inputs logic gate.
    A B Output
    0 0 1
    0 1 0
    1 0 0
    1 1 0
    (i) Identify the logic gate used and draw its logic symbol.
    (ii) If the output of this gate is fed as input to a NOT gate, name the new logic gate so formed.


    (i) From the given truth table it is clear that the given gate is NOR gate. Logic symbol (ii) If the output of NOR gate is fed as an input to a NOT gate, then the truth table is
    A B Y
    0 0 0
    0 1 1
    1 0 1
    1 1 1
    This new gate is OR gate.

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