What Is an LED?

<sidebar>Sidebar: What Is a Component?</sidebar> A Light-emitting diode (LED) is a small light which lights up on command, and can be programmed to flash in a pattern and respond to other components etc.

LEDs are commonly used for displaying that a command or event has occurred and is can used to display that a separate component or even a whole system is on/enabled. You can use LEDs to create and simulate applications such as car and motorcycle indicators and change the colour of the LED mid-simulation using a flowchart program.