(Light-Emitting Diode)A semiconductor device that allows electricity to flow through and let the light out, but there are very few
current semiconductor technology has progressed rapidly. The LED technology advances quickly as well. Evolved The color of the light emitted, whether red, green, orange or production end, and make the LED developed quickly is blue complementary colors in 3 colors: red, green. Blue is the beginning of the LED and the LED lights in various
objects PURPOSE.