About LED (Light-Emitting Diode)
LED (Light-Emitting Diode) is a semiconductor diode that emits light when it is charged with electricity. They come in many colors and some LEDs have multiple elements. these elmement makes them capable of of emitting light with different colors.
Also, LEDs have so many advantages over other light sources, like lower energy consumption, longer lifetime, smaller size, faster switching and improved physical robustness. Light emitting diodes are used in applications like aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, camera flashes, medical devices and lighted wallpaper.