Logic Gate Simulator Logic Gate Simulator Select Gate / Circuit OR Gate AND Gate NOT Gate NOR Gate NAND Gate XOR Gate XNOR Gate 3-INPUT OR 3-INPUT AND 3-INPUT NOR 3-INPUT NAND 3-INPUT XOR 3-INPUT XNOR Half Adder Full Adder 8-to-3 Encoder 3-to-8 Decoder Click on the LEDs to toggle inputs. Red = 0 | Green = 1 Result Truth Table & Details