LED is known as Light Emitting Diode. It is an electrical component, which emits light when electric current flows through it. It is a light source based on semiconductors. These are generally molded into lighter shape. They are very effective and are very cheap at cost.

They are used for various purposes:

1. Displays

2. TV backlights

3. Also used for dimming of lights

They are of different types:

1. Miniature

2. High power

3. Flash

4. Alphanumeric

And many more.

I hope this answer helps!😊