Digital vs Analog Signals
The difference between on/off and a smooth range.
Two Kinds of Signal
Electronics speak in two languages. A digital signal is simple on or off, while an analog one varies smoothly. Both matter in your projects.
Digital Means On or Off
A digital signal has only two states: HIGH or LOW, like a light switch. There is nothing in between, just yes or no.
All lessons in this course
- Digital vs Analog Signals
- analogRead Returns 0–1023
- Read a Potentiometer Knob
- map() Values to a New Range