What is an LED and how does it work?
An LED, or Light Emitting Diode, is a semiconductor device that emits light when electrical energy is applied to it. It consists of a computer chip that is attached to a positive power lead and a negative power lead. The ‘anvil’ on the top of the negative lead holds one side of the chip and the ‘whisker’ on top of the positive lead holds the other side. The LED is encased in clear epoxy resin.