What are the logic gates shown below equivale | vedclass

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(B) For figure $(a)$: The gate is an $OR$ gate with inverted inputs. The output $Y = \bar{A} + \bar{B}$. According to De Morgan's theorem,$\bar{A} + \

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$a$ is $NAND$ gate and $b$ is $NOR$ gate

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(B) For figure $(a)$: The gate is an $OR$ gate with inverted inputs. The output $Y = \bar{A} + \bar{B}$. According to De Morgan's theorem,$\bar{A} + \bar{B} = \overline{A \cdot B}$. This is the Boolean expression for a $NAND$ gate.For figure $(b)$: The gate is an $AND$ gate with inverted inputs. The output $Y = \bar{A} \cdot \bar{B}$. According to De Morgan's theorem,$\bar{A} \cdot \bar{B} = \overline{A + B}$. This is the Boolean expression for a $NOR$ gate.Therefore,$(a)$ is equivalent to a $NAND$ gate and $(b)$ is equivalent to a $NOR$ gate.

Entry	$A$	$B$	$Y$
$1$	$0$	$1$	$0$
$2$	$1$	$0$	$0$
$3$	$1$	$1$	$1$
$4$	$0$	$0$	$1$

What are the logic gates shown below equivalent to?

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