Identify the logic operation performed by the | vedclass

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(A) The given circuit consists of a $NOR$ gate followed by a $NOR$ gate with its inputs shorted together,which acts as a $NOT$ gate.Let the inputs to

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$OR$

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(A) The given circuit consists of a $NOR$ gate followed by a $NOR$ gate with its inputs shorted together,which acts as a $NOT$ gate.Let the inputs to the first $NOR$ gate be $A$ and $B$. The output of the first $NOR$ gate is $Y' = \overline{A+B}$.This output $Y'$ is fed into both inputs of the second $NOR$ gate. The output of the second $NOR$ gate is $Y = \overline{Y' + Y'} = \overline{Y'} = \overline{\overline{A+B}}$.Using the law of double negation,$\overline{\overline{X}} = X$,we get $Y = A+B$.This is the Boolean expression for an $OR$ gate.

Identify the logic operation performed by the circuit given here.

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