OR Gate

Has 3 inputs and 1 output. If ANY of the inputs is ON, the output is ON.

AND Gate

Has 3 inputs and 1 output. The output is ON when ALL of the inputs are ON. (Can disable inputs by Shift Right-clicking with the Screwdriver.)

NOT Gate

Has 1 input and 3 outputs. The output is the invert of the input.

NOR Gate

Has 3 inputs and 1 output. The output is ON by default. If ANY of the inputs are ON, then the output is OFF.

NAND Gate

Has 3 inputs and 1 output. The output is ON by default. When ALL of the outputs are ON, the output turns OFF.

XOR Gate

Has 2 inputs and 1 output. The output is OFF by default. When ONLY 1 of the inputs is ON, then the output is ON.

XNOR Gate

Has 2 inputs and 1 output. The output will turn ON if the inputs MATCH.