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Mac OS is the operating system used in Macintosh computers since their introduction in 1984. Some appliances (most notably the iPhone) also run derivative versions of Mac OS. The current version is Mac OS X 10.6 (often referred to as simply OSX), which is derived from NeXTSTEP, and has a Mach microkernel running a BSD compatibility layer. Most applications are written in Objective-C using the Cocoa framework.

Mac is a term which describes the broader class of Apple computer hardware and their Macintosh operating systems.

Older versions

Pre-X versions of Mac OS were written in-house at Apple and were based in part on the slightly earlier Lisa Office System. "Classic" Mac OS is still in use on many older Macs, especially 68k Macs (Macs with a Motorola 680x0 processor), which are unable to run versions newer than 8.1. (In fact, many older Macs can't even run OS 8 at all.) Depending on the specific model, PowerPC Macs support anywhere from System 7.1.2 up to OS X 10.5. (OS X 10.6 dropped support for PowerPC Macs.)

For more information, see Wikipedia's Mac OS page.

Revision as of 15:27, 28 October 2009 (view source) Eriksiers (talk \| contribs) (merged OSX; added a few wp links) ← Older edit		Revision as of 22:00, 28 October 2009 (view source) Eriksiers (talk \| contribs) m (fixed typos) Newer edit →
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	[[Category:Operating Systems]]'''Mac OS''' is the [[:Category:Operating Systems\|operating system]] used in [[Macintosh]] computers since their introduction in 1984. Some ~~aplliances~~ (most notably the [[wp:iPhone\|iPhone]]) also run derivative versions of Mac OS. The current version is '''[[wp:Mac OS X\|Mac OS X]]''' 10.6 (often ~~refered~~ to as simply '''OSX'''), which is derived from [[wp:NeXTSTEP\|NeXTSTEP]], and has a Mach microkernel running a BSD compatibility layer. Most applications are written in [[Objective-C]] using the [[Cocoa]] framework.		[[Category:Operating Systems]]'''Mac OS''' is the [[:Category:Operating Systems\|operating system]] used in [[Macintosh]] computers since their introduction in 1984. Some appliances (most notably the [[wp:iPhone\|iPhone]]) also run derivative versions of Mac OS. The current version is '''[[wp:Mac OS X\|Mac OS X]]''' 10.6 (often referred to as simply '''OSX'''), which is derived from [[wp:NeXTSTEP\|NeXTSTEP]], and has a Mach microkernel running a BSD compatibility layer. Most applications are written in [[Objective-C]] using the [[Cocoa]] framework.

	'''Mac''' is a term which describes the broader class of Apple computer hardware and their Macintosh operating systems.		'''Mac''' is a term which describes the broader class of Apple computer hardware and their Macintosh operating systems.