File:IR led.jpg - Wikimedia Commons
File:LED in simple Direct Current Circuit.JPG - Wikipedia
Indium gallium nitride - Wikipedia
Grove - Red LED - Seeed Wiki
Leuchtdiode – Wikipedia
File:Traffic Light LED 665.png - Wikipedia
Light-emitting diode - Wikipedia
File:+- of LED 2.svg - Wikimedia Commons
Light-emitting diode - Wikipedia
What is LED? Who invented LED? - Quora
RGB LED Module - Wiki
File:LED light bulb.jpg - Wikimedia Commons
LED lamp - Wikipedia
Why the blue LED should light up your life (and won a Nobel Prize) - Science in the News
SMD LED - Wikipedia
LED display - Wikipedia
What are LEDs? - Ledlam Lighting - LED Lighting for your Home
LED stage lighting - Wikipedia
Grove - RGB LED Matrix w/Driver - Seeed Wiki
RGB LED Module - Wiki
File:LED bulbs.jpg - Wikipedia
File:Electronic-Component-Red-LED.jpg - Wikimedia Commons
