A light emitting diode is a semiconductor light source (LED). LEDs are frequently used as indicator lamps in many devices and are also used for other lighting. It was first introduced in 1962 as a low-intensity red light, but today visible, ultraviolet, and infrared wavelengths with high brightness are available.
Light emitting diodes (LED) are, in simplest terms, tiny light bulbs that fit into an electrical circuit but they don’t have a filament that can deteriorate and burn out. “They are illuminated solely by the movement of electrons in a semiconductor material, and they last just as long as a standard transistor. The lifespan of an LED surpasses the short life of an incandescent bulb by thousands of hours.”
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