Logic gates/NOR
NOR = NOT-OR ~ Therefore this indicates that the result of the inputs placed through the gate will go through the OR operation and the NOT operation. The correct order of processing is:
Step 1. Put the inputs through the OR operation.
Step 2. From the results of the first step - invert (using the NOT operation).
Step 3. Take the result from Step 2 as the output.
Rules of a NOR gate
[edit | edit source]A NOR gate is a logic gate which follows the rules of the truth table below:
| Input A | Input B | Output X |
|---|---|---|
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 0 |
Circuit Symbol
[edit | edit source]The NOR gate is represented within a circuit diagram using the following circuit symbol:
In the example to the left we can see that A & B are the inputs and the output is the result of A & B processed through the "OR" operation and then the value is inverted. This is represented using a method of notation called "DeMorgans Logic Notation".