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OR logic gate, diagram
OR logic gate, diagram. Logic gates are electrical circuits that are wired so as to produce a specific output according to logical rules. The diagram shows two inputs (A and B) and an output (Q). An OR gate outputs on if one or more of its inputs are on, as shown in the table at lower right. The inputs here are both on, with the LED (light-emitting diode) at right in the on (lit) state. The shape of the logic gate shown here is that of the OR symbol used on circuit diagrams. For a series of diagrams of the seven basic logic gates (NOT, OR, AND, NOR, NAND, XOR and XNOR), see images C045/9800 to C045/9806., Photo by SCIENCE PHOTO LIBRARY
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