**Silicon, Circuits, and the Digital Revolution**

**Introduction to Digital Logic: **
**OR Gate**

A: | B: | C: |
---|---|---|

(in) | (in) | (out) |

0 | 0 | 0 |

0 | 1 | 1 |

1 | 0 | 1 |

1 | 1 | 1 |

The OR operation also has the usual logical significance -- the outcome is true if either of the two inputs are true. The symbol for OR looks like the "plus" representing the usual addition of two numbers; note that the truth table looks correct for addition of "0"s and "1"s, except for the last entry.

Comments, suggestions, or requests to ghw@udel.edu.
"http://www.physics.udel.edu/~watson/scen103/colloq2000/or.html" Last updated May 4, 2000. © George Watson, Univ. of Delaware, 2000. |