modified 11 years ago

How OR gate works

00:30:00

OR gate is an electronic component that allows current to flow if at least one of the switches is closed. In fact, in the Boolean algebra, OR function has the following characteristics:
T--> True (closed switch, electronic value 1)
F--> False (opened switch, electronic value 0)

FxF=F
FxT=T
TxF=T
TxT=T

The equivalent of an OR gate is a circuit made up of two switches connected in parallel.

published 11 years ago

Sine_eyed

11 years ago

Well you're almost correct. An OR gate isn't a single component as you say it is- like a resistor or capacitor. OR is more of a concept of a logical function that can be performed by different components, in various ways. But they'll net the same result (correctly shown by your truth table). The parallel switch analogy is correct as well- think of it like: current will be allowed through the gate if switch A *OR* switch B is closed. Try to build an OR gate with transistors- to become familiar with the logical function of OR, as well as how a transistor can act as a switch!..

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