(Bilgisayar) Macintosh İşletim Sistemi, kısaca Maç OS, Apple firması tarafından piyasaya sürülen işletim sistemi ailesidir. En son ana sürümü Maç OS X'tır. Maç OS ailesinde Maç OS 7, Maç OS 9 ve Maç OS X vardır
İngilizce - İngilizce
mac os teriminin İngilizce İngilizce sözlükte anlamı
Mac OS is the trademarked name for a series of graphical user interface-based operating systems developed by Apple Inc. (formerly Apple Computer, Inc.) for their Macintosh line of computer systems. The Macintosh user experience is credited with popularizing the graphical user interface. The original form of what Apple would later name the "Mac OS" was the integral and unnamed system software first introduced in 1984 with the original Macintosh, usually referred to simply as the System software