Seven, five and four segment indicator designs by punpcklbw on DeviantArt
Four Digit 7-Segment Display Interfacing with Arduino | Circuits4you.com
seven-segment – Mike's Electro Shack
My first 4 segment display idea : r/SegmentedDisplays
Working with a 4-digit 7-segment display | Raspberry Pi LED Blueprints
Arduino 4 Digit 7 Segment Display Tutorial
Using a 4 Digit & 7 Segment Display, With Arduino : 7 Steps - Instructables
Correct connections: 7-segment, 4-digit display with common anode - Arduino Stack Exchange
A Problem Squared on Twitter: "The most recognisable 7 segment display, as well as @standupmaths' attempts at 6 and 4 segment displays and @bechillcomedian's attempt at a 4 segment display. Which one