What is an LED?, All About LEDs

This tutorial will cover those wonderful blinky things, LEDs. We're also going to cover how to calculate the current going through an LED and in the mean time introduce two important laws of electronics, Kirchhoff's Voltage Law and Ohm's Law.

Individual LEDs

Learn About LED Lighting

Learn How to Limit Current to LED, Advanced PCB Design Blog

Light-emitting diode - Wikipedia

ZEISS Microscopy Online Campus

Super bright Red LEDs for all types of experiments!, Purchase red light emitting diodes (LED) lights for a variety of science project needs. These

Red LED (Pack of 10)

Engineers invent vertical, full-color microscopic LEDs

LED, Definition, Lights, Types, & Facts

An Overview of Dimming LEDs and How to Tell if Your Lights are

Light Emitting Diodes, Semiconductors

Types of LED Top List of 9 Different Types of LED