Logic Gates: AND

The AND logic gate takes two bits as an input. Its output follows the rule: "only if both bits are $1$, output $1$; otherwise, output $0$." This gate acts exactly as the "and" operator in programming does: given the Boolean variables x and y, then x && y means "x and y". You may also use the bitwise & operator: x & y.

Below is the black-box representation of the AND gate, one way in which we can build it with transistors, and its truth table.

AND Gate: black-box representation. Miriam Briskman, CC BY-NC 4.0.

One way to build an AND Gate from transistors. Taken from this article by Muhammad Shahid.

Input		Output
x	y	xy
$0$	$0$	$0$
$0$	$1$	$0$
$1$	$0$	$0$
$1$	$1$	$1$

AND truth table