The AND gate is a logic circuit that has two or more inputs and a single output. The AND gate produces an output of 1, only when all its inputs are 1s. If any of the inputs are 0s, the output is 0.

The operation of the AND gate is summarized by the bellow table . Such a table, called a truth table, shows the output for each possible input. The inputs are designated A and B. The output is designated Y.

The AND gate uses the rules of multiplication. The AND function is known for multiplication-like results. The output of an AND gate is represented by the equation Y 5 A·B or Y 5 AB. The AND function is typically represented by the two variables A and B as AB.