System 1

The Macintosh "System 1" is the first version of Apple Macintosh operating system and the beginning of the classic Mac OS series. It was developed for the Motorola 68000 microprocessor. System 1 was released on January 24, 1984, along with the Macintosh 128K, the first in the Macintosh family of personal computers. It received one update, "System 1.1" on December 29, 1984, before being succeeded by System 2.

For the concept of "System 1" and "System 2" in cognition, see Thinking, Fast and Slow § Two systems.
Macintosh "System 1"
Version of the classic Mac OS operating system
The original "System 1" desktop
DeveloperApple Computer
OS familyMacintosh
Source modelClosed source
Released to
manufacturing		January 24, 1984 (1984-01-24)
Latest release1.1 / December 29, 1984 (1984-12-29)
Kernel typeMonolithic
LicenseProprietary
Succeeded bySystem 2
Support status
Architectural, unsupported
Part of a series on
Classic Mac OS
Versions
Applications
Developer
Technology
Related
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