It has one input and one output. The output will turn on when the input is not on, just Negate. This can be used in many situations, such as laser-triggered setups. It can be used with an AND Gate to make complex circuitry.
In order to make this device to work, it must be connected to other logic devices.
The table below states the signal (or result) of the output.
0 = Off, 1 = On