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  4. The output of the given logic circuit is :

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Q. The output of the given logic circuit is :Physics Question Image

JEE MainJEE Main 2019Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

$Y = \overline{\left(\bar{A} +\bar{B}\right)\bar{A}} $
$ =\overline{\bar{A} +\bar{A}B}$
$ = A \left(\overline{\bar{A}B}\right) $
$ = A +A \bar{B} = A \bar{B} $

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