Q.
Consider the circuit of logic gates shown in the above figure. This combination of logic gates can be replaced by which logic gate?
NTA AbhyasNTA Abhyas 2020
Solution:
The boolean expression of this arrangement is,
For $NOT$ gate,
$Y_{1}=\bar{A}$ and $Y_{2}=\bar{B}$
For $NOR$ gate,
$Y=\bar{\bar{A} + \bar{B}}$ $=\bar{\bar{A}}\cdot \bar{\bar{B}}$
$Y=A\cdot B$
Truth Table
0
Thus, the combination represents $AND$ gate.
The boolean expression of this arrangement is,
For $NOT$ gate,
$Y_{1}=\bar{A}$ and $Y_{2}=\bar{B}$
For $NOR$ gate,
$Y=\bar{\bar{A} + \bar{B}}$ $=\bar{\bar{A}}\cdot \bar{\bar{B}}$
$Y=A\cdot B$
Truth Table