File:OR_ANSI_Labelled.svg · Wikimedia Commons · See Wikimedia Commons
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Encyclopedic overview
The OR gate is a digital logic gate that implements logical disjunction. The OR gate outputs "true" if any of its inputs is "true"; otherwise it outputs "false". The input and output states are normally represented by different voltage levels.
Description
Excerpted from Wikipedia’s “OR gate” article, available under the CC BY-SA 4.0 licence.