Input/output Ports

LED Theory and working principles

Robo Indiahttp://roboindia.comWhat is an LED ?introduction to ledWhat is an LED ?LED stands for Light Emitting DiodeIt is a semiconductor light sourceMostly it is used for indication

introduction to ledLED have TWO legs normally known as Anode and Cathode.

If you have forgotten ANODE is +ve terminal (Long leg)CATHODE is ve terminal (Small Leg)introduction to ledintroduction to led

Connection with MCU

Connection with MCU

As name suggest LED is also a diode and when it is forward biased then electrons are able to recombine with holes in device, as a result it release energy in form of photonsPhenomena ElectroluminescenceColor Depend on energy of photon Working of led LED PRACTICAL

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