A diodo LED (Light Emitting Diode) is a semiconductor device that emits light when an electric current passes through it. It is widely used in various applications, including indicators, displays, and lighting. LEDs are energy-efficient and have a long lifespan compared to traditional light sources. The diodo LED operates by electroluminescence, where electrons recombine with holes in the semiconductor material, releasing energy in the form of light. They come in various colors, depending on the materials used in their construction. This versatility makes them popular in both consumer electronics and industrial applications.