The AND Gate

The AND gate is one of the three fundamental logic gates. It takes two inputs and produces one output. The output is 1 (TRUE) only when both inputs are 1. In all other cases, the output is 0.

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How the AND Gate Works

The AND gate checks whether all of its inputs are true. For a two-input AND gate:

• The output is 1 only when Input A AND Input B are both 1.
• If either input (or both) is 0, the output is 0.

Think of the AND gate as a strict bouncer at a nightclub — you need both a valid ID AND a ticket to get in. If you are missing either one, you are turned away.

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Truth Table for AND

Input A	Input B	Output (A ∧ B)
0	0	0
0	1	0
1	0	0
1	1	1