Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 99
101. The following Figure shows a logic gate circuit with two inputs $A$ and $B$ and the output $Y$. The voltage waveforms of $A, B$ and $Y$ are given :
The logic gate is :
(a) NAND gate
(b) NOR gate
(c) OR gate
(d) AND gate
[2010]
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Answer:
Correct Answer: 101. (a)
Solution:
- (a) From the given waveforms, the truth table is as follows.
The above truth table is
for NAND gate.
Therefore, the logic gate is NAND gate.
| $A$ | $B$ | $Y$ |
|---|---|---|
| 1 | 1 | 0 |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
