The OR gate is an electronic circuit that gives a high output (1) if one or more of its inputs are high.
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.
** It is generally a good idea to include a gate resistor to avoid ringing. Ringing (parasitic oscillation) is caused by the gate capacitance in series with the connecting wire's inductance and can cause the transistor to dissipate excessive power because it doesn't turn on quickly enough and hence the current through drain/source in combination with the somewhat high'ish drain-source impedance will heat the device up. A low ohm resistor will solve (dampen) the ringing.**
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