Q.
Inputs $A$ and $B$ are given to show combination of gates
Then, output $C$ is
Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
Given circuit is
$A$
$B$
$Y-{1}$
$Y-{2}$
$Y-{3}$
$Y-{4}$
$y_{5}$
$y_{6}$
$y_{7}$
$C$
0
0
0
0
1
1
1
0
0
1
0
1
0
1
1
0
1
1
0
1
1
0
1
0
0
1
0
1
1
0
1
1
1
1
0
0
0
1
1
0
Observing, this is $NOR$ gate.
| $A$ | $B$ | $Y-{1}$ | $Y-{2}$ | $Y-{3}$ | $Y-{4}$ | $y_{5}$ | $y_{6}$ | $y_{7}$ | $C$ |
|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 |
| 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 |
| 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 |