Physics - Semiconductors Question with Solution | TestHub

Output of gate $1,Y_1=\bar{A}$ Output of gate $2,Y_2=\bar{B}$ Output of gate 3 , $\begin{array}{rl}Y& =\overline{Y_1+Y_2}=\overline{\bar{A}+\bar{B}}\\ & =\overline{\bar{A}}\times \overline{\bar{B}}\\ & =AB\end{array}$ Which is the output of AND gate.