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NOT gates

A NOT gate, also called the , uses one to generate one . A NOT gate inverts the input - the output is 1 (TRUE) if the input is 0 (FALSE), and the output is 0 (FALSE) if the input is 1 (TRUE).

NOT gates are represented diagrammatically as

Two separate NOT gates representing a TRUE and a FALSE output

A shows, for each combination of inputs, what the output will be. A NOT gate is represented in a truth table as seen below.

AQ
01
10
A0
Q1
A1
Q0

This NOT gate is represented in as one of:

  • NOT A
  • 卢 A
  • ~A