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The Apple Jonathan: A Very 1980s Concept Computer That Never Shipped
Fitch’s design called for the backplane and track to support book-shaped modules, each containing circuitboards and chips for running the Mac OS, Apple II software, DOS, Windows, or Unix operating systems, plus other modules for connecting disk drives, modems and networking hardware, all plugged into the same track.
https://512pixels.net/2024/03/apple-jonathan-modular-concept/
