The XpressReal T3 is a single-board computer (SBC) that looks like a slightly larger Raspberry Pi Zero. 2 W. But the T3 has a faster processor, more memory, onboard storage, more ports and connectors, ...
The first Mac software was called System 1 and it was released on January 24, 1984, and there have been 30 major updates since. Apple rebranded to Mac OS with the release of mac OS 8 on July 26, 1997.
It replaced the polished but limited Mac OS9 with a UNIX-underpinned reimagining of computer operating systems.