question_answer

To get an output Y = 1 from the circuit shown below, the input must be

A) A             B             C                 0              1              0

B)                 0              0              1

C)                 1              0              1

D)                 1              0              0

Correct Answer: C

Solution :

Gate I is OR gate Y' = A + B Gate II is AND gate Y = Y'. C \[\therefore A=1,B=0,C=1\]will give Y = 1