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Q.
The combination of gates shown in the figure below produces
NTA AbhyasNTA Abhyas 2020Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
Here, the output of these gate
$Y = \overline{\bar{A}. \bar {B}}$
But according to Boolean algebra,
$\overline{A}.\overline{B} = \overline{A+B}$
$\therefore Y = \overline{\bar{A}+ \bar {B}} = A+B$
or $Y=A+B$
It means the whole circuit of gates behaves as $OR$ gate
