a circuit that is energized only when all of its inputs are energized.
British Dictionary definitions for AND circuit
AND circuit
/ænd/
noun
1.
(computing) a logic circuit having two or more input wires and one output wire that has a high-voltage output signal if and only if all input signals are at a high voltage simultaneously: used extensively as a basic circuit in computers Compare NAND circuit, NOR circuit, OR circuit
Word Origin
C20: so named because the action performed on electrical signals is similar to the operation of the conjunction and in logical constructions