Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 92
94. To get output 1 for the following circuit, the correct choice for the input is
[2016, 2012, 2010]
(a) $A=0, B=1, C=0$
(b) $A=1, B=0, C=0$
(c) $A=1, B=1, C=0$
(d) $A=1, B=0, C=1$
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Answer:
Correct Answer: 94. (d)
Solution:
- (d) The Boolen expression for the given combination is output $Y=(A+B) \cdot C$
Truth table
| $A$ | $B$ | $C$ | $Y=(A+B) \cdot C$ |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 |
| 0 | 0 | 1 | 0 |
| 1 | 1 | 0 | 0 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 1 | 1 |
| Hence, $A=1, B=0, C=1$ |
