what do you mean by LED?
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In the simplest terms, a light-emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it. Light is produced when the particles that carry the current (known as electrons and holes) combine together within the semiconductor material.
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In simple words, a light-emitting diode is a semiconductor device that emits light when current passes through it. ... When voltage is applied to an optical semiconductor device, and it emits light, it is known as Light Emitting Diode (LED). It is a device which converts electrical energy to light energy.
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