AND circuit, AND gate - a circuit in a computer that fires only when all of its inputs fire

computer circuit - a circuit that is part of a computer

NAND circuit, NAND gate - a logic gate that produces an output that is the inverse of the output of an AND gate

OR circuit, OR gate - a gate circuit in a computer that fires when any of its inputs fire

X-OR circuit, XOR circuit, XOR gate - gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire