Carsten Milkau/NOT Gate
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< User:Carsten MilkauRevision as of 04:35, 22 July 2018 by 89.16.148.86 (talk) (→Implementation: Improved example of NOT gate elimination)
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NOT Gate
A NOT gate, sometimes also called inverter, is a circuit that outputs the value that was not input. It has a single input and output, and each can only take one of two pre-defined values (typically 0 and 1). Whatever the input value is selected, the output value will be the other of the two.
Definition
| input | output |
|---|---|
| 0 | 1 |
| 1 | 0 |
Connectors
- Input: one of two values (0 or 1)
- Output: the other of the two values
Implementation
NOT gates can often be avoided by modifying the circuit. For instance, an OR Gate with two NOT gates connected to its inputs and outputs can always be replaced by an AND gate with just one NOT gate connected.
Unfortunately, there is no single-component implementation of a NOT gate. However, if you happen to have a data signal with a known value (like a memory containing a constant), often you can feed this signal into a single component in order to turn it into a NOT gate.