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Apple’s System Software 1.0 and 1.1 was game-changer when it was first released in 1986. Developed alongside Apple’s Macintosh computers, the operating system was designed to improve the user experience and fix bugs that had been causing data loss and system crashes.
On February 10, 1986, Apple released System Software 1.0, which featured a host of bug fixes and updates to the Calculator and Chooser apps. And just a couple of months later, on April 14, 1986, the company released a compiled version of “Guided Tour 512Ke” for the new Macintosh 512Ke, complete with an updated version of System 3.1.1.
| Released | February 10, 1986 (1.0) April 14, 1986 (1.0 for Macintosh 512Ke) June 2, 1986 (1.1) |
| System Requirements | Motorola 68000 processor or later 128 KB of RAM |
| Distribution | 400 KB floppy disk |
| Versions | System Software 1.0 – System 3.1 / System 3.1.1, Finder 5.2 System Software 1.1 – System 3.2, Finder 5.3 |
But the updates didn’t stop there. On June 2, 1986, Apple released System Software 1.1, which featured even more improvements and bug fixes. This version of Macintosh System Software was eventually replaced by System Software 2.0.
It’s hard to believe that System Software 1.0 and 1.1 is now 37 years old. But even though it’s been around for decades, the operating system continues to be remembered as a groundbreaking release that set the standard for future Apple software.
Further Reading and References
- Macintosh: System Software Version History – Apple Support
- System 1.0 – Fandom
- System 1.1 – Fandom
- The Early Mac OS – The Apple Museum
- Apple Macintosh System Software 1.0 : Apple Computer, Inc. – Internet Archive
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Last updated: April 8, 2023