Here is a simple, yet useful circuit of an Arduino 4-digit 7-segment LED display unit. The module used here is a self-contained, compact common-cathode module containing four 7-segment LED numeric ...

It’s based on several 4-digit seven-segment displays controlled by an AVR128DA32. Navigation is just a few push buttons and a buzzer to let you know when you’ve won. The game is simple ...

That’s pretty impressive, considering the last matrix 7-segment display we ... tables for each digit. The lookup tables are stored in ROM, saving precious RAM on the Arduino.