# Pulse Width Modulation

> Pulse width modulation (PWM) is a fancy term for describing a type of digital signal. Pulse width modulation is used in a variety of applications including sophisticated control circuitry. A common way we use them here at SparkFun is to control dimming of RGB LEDs or to control the direction of a servo motor [Learn about PWM](https://learn.sparkfun.com/tutorials/pulse-width-modulation?_ga=1.187957866.310968540.1461470817)