OR gate facts for kids
| INPUT | OUTPUT | |
| A | B | A OR B |
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 1 |
The OR gate is a logic gate that outputs 1 (true) when at least one of its inputs is 1 (true). That means that if both of its inputs are 0, the output will be 0.
The best way to remember an OR operation is "one or the other, or both."
Symbols
There are three symbols for the OR gate:
 |
 |
 |
| MIL/ANSI Symbol | IEC Symbol | DIN Symbol |
Images for kids
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Wired OR gate using open-collector NOR gates
See also
In Spanish: Puerta OR para niños
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OR gate Facts for Kids. Kiddle Encyclopedia.