And gate =D-
Can only be turned on if both inputs are on.
Or gate =)-
Can be turned on if one or both of the inputs are on.
Not gate ->o-
Can only be turned on when the input is off.
NAND gate =Do-
Can be turned on when one or both of the inputs are off (an and gate and a not gate combined)
Nor gate =)o-
Can only be turned on when both of the inputs are off (an or gate and a not gate combined)
X-or gate =)D-
Can only be turned on when only ONE of the inputs are on.