Question

Draw the output $Y$ in the given combination of gates.

• A.
• B.
• C.
• D.

Answer 1

The correct option is A


From figure,

$Y=\overline{Y_2}=\overline{Y_1+B}$

$\Rightarrow Y=\overline{Y_1}.\overline{B}\left(\text{De-Morgan's Theorem}\right)$

$\Rightarrow Y=\overline{\overline{A.A}}.\overline{B}$

$\Rightarrow Y=(A.A).\overline{B}$

$\Rightarrow Y=A.\overline{B}$

$A$	$B$	$\overline{B}$	$Y=A.\overline{B}$
0	0	1	0
0	1	0	0
1	0	1	1
1	1	0	0

Output $Y$,