Physics - Semiconductors Question with Solution | TestHub

The output of the given circuit can be depicted schematically as follows:

Hence. from the above diagram, the output can be written as

$\begin{array}{rcl}Y& =& \overline{\overline{A}·\overline{B}}\\ & =& \overline{\overline{A}}+\overline{\overline{B}}\\ & =& A+B\end{array}$

Thus, the given circuit represents an $\mathrm{OR}$ logic, the truth table for which is given below:

$A$	$B$	$Y$
$0$	$0$	$0$
$0$	$1$	$1$
$1$	$0$	$1$
$1$	$1$	$1$