Video of 20-Year-Old Mac Operating System Running on an Apple Watch [iOS Blog]

As an entire computer that fits on our wrists, the Apple Watch already seems like something out of a science fiction novel, but a new video from software developer Nick Lee demonstrates just how far computing has come in the last two decades.

Lee's hacked an Apple Watch running watchOS 2 to run a port of a 20-year-old Macintosh OS, System 7.5.5, using the Mini vMac Macintosh emulator.


When System 7.5.5 was released in 1996, it required a full PowerPC-based Mac to run, and in their smallest incarnation, those machines were clunky, heavy, and pretty far from the portable devices that we have now. Today, that same operating system can run on a tiny wrist-worn computer with a 1.3 to 1.7 inch screen.