Logic OR Gate
<infobox> <title source="name"><default>Logic OR Gate</default></title>
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Description (From Recipaedia)
Logic OR gate. Has two input on the sides and one output. The output is 1 when any of the inputs is 1, otherwise it is 0. Can be placed on any surface and rotated to desired position.
Hooking It Up
Connections
The output is the side where the 'pointy' end is. The inputs are the sides next to that one. The opposite side has no connection.
Graphical Symbol
Logic OR Gate has 2 inputs [ Labeled as A and B in Red ] and 1 output [ Y = A + B in Blue ]
OR Gate generated electric current when one or both of its inputs are 1. This is because the OR Gate finds the Maximum between its two inputs.
Truth Table
Truth table shows all possible inputs and how the output will respond.
| Inputs | Output | |
|---|---|---|
| A B | Y | |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 1 |
To demonstrate this, I will represent 0 with Blue and 1 with Red.
Notes
- OR gate finds the Maximum between two binary digits, unlike the Logic AND Gate, which finds the Minimum.
- OR gates are primarily digital devices but will operate on analog signals. It performs a bitwise OR. This allows for more compact and interesting circuit designs. See Using Analog Signals.