Digital Output

“Digital” refers to the binary values of 1 or 0. A digital signal represents an on or off state. Digital output is used to turn devices on or off

Table of contents

1. Applications
2. Digital signals and values
3. Setting the pinMode
4. Setting a digital output

Applications

Digital output is used in the following applications.

• Sending on/off control signals
• Turning low-powered devices such as LEDs on and off

Digital signals and values

Setting the pinMode

Digital pins on an Arduino can be configured for input or output. When configured for output, the digital pin can be set to HIGH or LOW. HIGH represents being “on”. LOW represents being “off”.

pinMode(11, OUTPUT);

Setting a digital output

digitalWrite(11, HIGH);