Q.
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 as given.
The logic gate is
AIPMTAIPMT 2010Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
It is clear from the given logic circuit, that the output $Y$ is low when both the inputs are high, otherwise it is high. Thus logic circuit is $NAND$ gate.
A
B
Y
1
1
0
0
0
1
0
1
1
1
0
1
| A | B | Y |
|---|---|---|
| 1 | 1 | 0 |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |