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  4. In the following circuit, what are P and Q?

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Q. In the following circuit, what are P and Q?Physics Question Image

KCETKCET 2019Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

For both NOR gates $\, y=\overline{A+B}$
$For \,gate\,1, \,A = 1\quad\therefore \, p=0$
$For \,gate \,2, \,B = 0\quad\therefore \, Q=1$