The original Apple Macintosh computer, launched in 1984, was fundamental for ushering in GUIs (graphical user interfaces). It wasn’t the first personal computer to feature a GUI operating system and the concurrent Apple II still retained a more traditional command line interface for years, but we largely have the Macintosh to thank for modern GUIs. So it is appropriate that Dave Luna chose to use an Apple Macintosh Classic II to retrofit with a modern ePaper display.
https://blog.arduino.cc/2022/08/24/classic-macintosh-gets-a-massive-epaper-display/