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.
Lion represented a major step forward, installing via download rather than DVDs, dropping all support for PowerPC software, and implementing interface elements popularized on iPads and iPhones. With ...
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