In this tutorial, we’ll be discussing how to interface multiple digits 7-Segments display with pic microcontrollers, or any other MCUs, generally speaking. I’ll briefly introduce the phenomenon called “persistence of vision” and how we can use it in embedded systems to trick the human eye by multiplexing displays in order to reduce the pin-count required to drive these output 7-segment display units.

By the end of this tutorial, you should be able to implement your own multi-digit 7-segments display controller. And you’ll create a couple of simple projects to test things out. First of which is a 3-Digit counter and the other is a 3-Digit ADC result display. Without further ado, let’s get right into it!