Q.
Figure shows a combination of logic gates.
To what single gate is this combination equivalent?
Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
$A$
$B$
$C$
$D$
$X$
0
0
1
1
0
0
1
1
0
1
1
0
0
1
1
1
1
0
0
0
The combination of logic gates can be replaced by a single EX-OR gate.
| $A$ | $B$ | $C$ | $D$ | $X$ |
|---|---|---|---|---|
| 0 | 0 | 1 | 1 | 0 |
| 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | 1 | 1 |
| 1 | 1 | 0 | 0 | 0 |