Q.
In a given circuit as shown the two input waveforms $A$ and $B$ are applied simultaneously. The resultant waveform $Y$ is
A) [image:14_image144.png]
B) [image:14_image145.png]
C) [image:14_image146.png]
D) [image:14_image147.png]
Explanation
(a) (1 = high, 0 = low)
Input to $A$ is in the sequence, 1,0,1,0
Input to $B$ is in the sequence, 1, 0, 0, 1
Sequence is inverted by NOT gate
Thus inputs to OR gate becomes 0, 1, 0, 1 and 0, 1, 1, 0 output of OR gate becomes 0, 1, 1, 1
Since for OR gate $0 + 1 = 1$. Hence choice (a) is correct
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.