Mac OS - Simple English Wikipedia, the free encyclopedia
The Macintosh Operating System (Mac OS) is a program that allows a Macintosh computer to operate and be used. Mac OS was first made by Apple Inc. in 1984. In those days Mac OS was called Macintosh System Software – which was shortened to System or SSW (System Software). The term "Mac OS" first appeared in the splash screen for System 7.5.1, but was not adopted as the new name until the release of Mac OS 7.6.
The latest version of Mac OS is macOS 12.6 Monterey. macOS Ventura is currently in beta testing, but will be the upcoming version for macOS.
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