OR Gate Simulation in Proteus Software

The OR gate is a digital logic gate that implements logical disjunction - it behaves according to the truth table to the right. A HIGH output (1) results if one or both the inputs to the gate are HIGH (1). If neither input is high, a LOW output (0) results.

In another sense, the function of OR effectively finds the maximum between two binary digits, just as the complementary AND function finds the minimum.OR Gates are basic logic gates, and as such they are available in TTL and CMOS ICs logic families.


There are two symbols of OR gates: the American (ANSI or 'military') symbol.

OR Gate Simulation in Proteus Software-


If no specific OR gates are available, one can be made from NAND or NOR gates in the configuration shown in the image below.

Any logic gate can be made from a combination of NAND or NOR gates.

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Related Links:
AND Gate
NOT Gate
NOR Gate

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