Logic Gates – NOT gate

A NOT gate (Inverter), is a single input logic gate. The output is simply opposite to that of the input.

NOT gate logic tableNOT gate (inverter)

You can simply create a NOT gate by using an NPN transistor and two resistors as shown here: ‘https://thelectronicsblog.wordpress.com/2015/11/29/not-gate-using-a-transistor’

 

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