<sod>On January 24, 1984, Apple Computer, Inc. introduced the original [[Macintosh 128K]]. Its [[System 1|early system software]] was partially based on the [[Lisa OS]], previously released by Apple for the [[Apple Lisa|Lisa]] computer in 1983; as part of an agreement allowing [[Xerox]] to buy shares in Apple at a favorable price, it also used concepts from the [[Xerox PARC]] [[Xerox Alto|Alto]], which former Apple CEO [[Steve Jobs]] and several other Macintosh team members had previewed. The operating system that was integral to early Macintosh computers is named '''System Software''' or simply "System", referred to by its major revision starting with [[System 6]] and [[System 7]]. Apple rebranded version 7.6 as '''Mac OS''' alongside its [[Macintosh clone]] program in 1996,<ref name="versionhistory">{{cite web|title=Macintosh: System Software Version History|publisher=[[Apple Inc.]]|date=August 7, 2001|url=https://support.apple.com/kb/TA31885|accessdate=September 25, 2016}}</ref> which ended after the release of [[Mac OS 8]] in 1997.<ref name="endofclones">{{Cite news|first=Galen|last=Gruman|title=Why Apple Pulled the Plug|magazine=Macworld|volume=14|pages=31–36|date=November 1997|issue=11|postscript=<!--None-->}}</ref> The last major release of the system was [[Mac OS 9]] in 1999.<ref name="macos9release">{{Cite web|url= http://www.applematters.com/article/october-23-1999-mac-os-9-released/|title=October 23, 1999: Mac OS 9 Released|publisher=AppleMatters.com|accessdate=2009-11-28}}</ref><eod>
<sod>Apple released the [[Macintosh 128K|original Macintosh]] on January 24, 1984. Its [[System 1|early system software]] was partially based on the [[Lisa OS]], previously released by Apple for the [[Apple Lisa|Lisa]] computer in 1983; as part of an agreement allowing [[Xerox]] to buy [[Share (finance)|shares]] in Apple at a favorable price, it also used concepts from the [[Xerox PARC]] [[Xerox Alto|Alto]] computer, which former Apple CEO [[Steve Jobs]] and other Macintosh team members had previewed.<ref name="appleconfidential2" /> The operating system integral to the Macintosh was originally named '''System Software''', or simply "System", and referred to by its major revision starting with [[System 6]] and [[System 7]]. Apple rebranded the system as '''Mac OS''' in 1996, starting officially with version 7.6, due in part to its [[Macintosh clone]] program.<ref name="versionhistory">{{cite web|title=Macintosh: System Software Version History|publisher=[[Apple Inc.]]|date=August 7, 2001|url=https://support.apple.com/kb/TA31885|accessdate=September 25, 2016}}</ref> That program ended after the release of [[Mac OS 8]] in 1997.<ref name="endofclones">{{Cite news|first=Galen|last=Gruman|title=Why Apple Pulled the Plug|magazine=Macworld|volume=14|pages=31–36|date=November 1997|issue=11|postscript=<!--None-->}}</ref> The last major release of the system was [[Mac OS 9]] in 1999.<ref name="macos9release">{{Cite web|url= http://www.applematters.com/article/october-23-1999-mac-os-9-released/|title=October 23, 1999: Mac OS 9 Released|publisher=AppleMatters.com|accessdate=2009-11-28}}</ref><eod>