A NOT gate (aka inverter) is a logic gate with only one input and one output. The output state is always the opposite of the input state.
NOT Gate (Inverter) Symbols
The input (
A) of a NOT gate is on the left, and the output (
X) is on the right of the logic NOT gate symbol.
|Distinctive Shape||Rectangular Shape||DIN Shape (Historic)|
NOT Gate Truth Table
Truth Table for NOT Gate
NOT Gate Test-It
To test the gate, click the switch symbol in the image below.
NOT Gate Logical Expressions
X = NOT A
In boolean algebra the overbar sign (
X = A
X = ∼A or
X = ¬A