Question

A CMOS implementation of a logic gate is shown in the following figure:

The Boolean logic function realized by the circuit is

Answer 1

Truth table:

$$\begin{array}{ccc}X& Y& V_0\\ 0& 0& 1\\ 0& 1& 0\\ 1& 0& 0\\ 1& 1& 0\end{array}$$
$V_0=\overline{X+Y}$