MCQ
In a given circuit as shown the two input waveform $A$ and $B$ are applied simultaneously. The resultant waveform $Y$ is
- ✓
- B
- C
- D
✓
Answer
Correct option: A.
a
(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 output of $OR$ gate becomes $0, 1, 1, 1$
Since for $OR$ gate $0 + 1 = 1$.
(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 output of $OR$ gate becomes $0, 1, 1, 1$
Since for $OR$ gate $0 + 1 = 1$.
Hence choice $(a)$ is correct.
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