Classic Mac OS

E6173

graphical operating system operating system proprietary software

Classic Mac OS is the original graphical operating system for Apple’s Macintosh computers, known for its intuitive interface, single-tasking roots, and evolution from System 1 through Mac OS 9 before being replaced by macOS.

Aliases (14)

Statements (70)

Predicate	Object
instanceOf	graphical operating system → operating system → proprietary software →
api	Carbon (late transitional API) → Macintosh Toolbox →
architecture	cooperative multitasking (later versions) → single-tasking (early versions) → single-user →
brandingChange	System 7 renamed to Mac OS 7.6 →
defaultFileSystem	HFS → HFS Plus → MFS →
developer	Apple Computer, Inc. → Apple Inc. →
discontinuationApproxDate	2002 →
emulationEnvironment	Classic Environment in Mac OS X →
fileManager	Finder →
finalReleaseDate	2001-12-05 →
finalReleaseVersion	Mac OS 9.2.2 →
includedApplication	MacPaint → MacWrite → SimpleText → TeachText →
initialReleaseDate	1984-01-24 →
initialReleaseVersion	System 1.0 →
initialReleaseWith	original Macintosh 128K →
kernelType	monolithic kernel →
license	proprietary →
majorVersion	Mac OS 8 → Mac OS 9 → System 1 → System 2 → System 3 → System 4 → System 5 → System 6 → System 7 →
multitaskingModel	cooperative multitasking →
networkingSupport	AppleTalk → TCP/IP →
notableFeature	Control Panels → Extensions → Platinum appearance (Mac OS 8) → QuickDraw graphics system → QuickTime multimedia framework → balloon help → drag and drop interface → resource fork-based file structure →
notableLimitation	lack of preemptive multitasking → lack of protected memory → system-wide instability from extensions conflicts →
operatingSystemFamily	Mac OS →
platform	Apple Macintosh → Motorola 68000 → PowerPC →
predecessor	Apple Lisa OS →
primaryProgrammingLanguage	C → Pascal →
successor	Mac OS X → macOS →
supportStatus	discontinued →
targetHardware	68k Macintosh computers → PowerPC Macintosh computers →
userInterface	desktop metaphor → graphical user interface →
userInterfaceElement	Finder → icons → menu bar → trash can → windows →

Referenced by (63)

Subject (surface form when different)	Predicate
Apple Macintosh computers → AppleTalk → Carbon (late transitional API) ("classic Mac OS") → Finder → Internet Explorer ("Mac OS") → Lotus 1-2-3 ("Macintosh System Software") → MacPaint → MacWrite → Macintosh 128K ("Macintosh System Software") → Macintosh 512K ("Macintosh System Software") → Macintosh II series ("System 6") → Macintosh II series ("System 7") → Macintosh LC series ("System 6") → Macintosh LC series ("System 7") → Macintosh SE ("System 7") → Macintosh Toolbox → Macromedia ("classic Mac OS") → Mr. T ("Macintosh System Software") → Mr. T → Performa ("System 7") → PowerBook ("System 7") → Quadra series ("System 7") → QuickDraw → SimpleText → TeachText → iBook ("Mac OS") →	operatingSystem
Macintosh II → System 1 → System 1.0 → System 3 ("Macintosh System Software") → System 3 ("classic Mac OS") → System 5 ("Macintosh System Software") → System 5 → System 6 →	operatingSystemFamily
Classic Mac OS ("System 6") → Classic Mac OS ("System 7") → Classic Mac OS ("Mac OS 8") →	majorVersion
Mosaic → PowerBook ("Mac OS") → Quadra series ("classic Mac OS") →	platform
System 4 ("classic Mac OS") → macOS ("Macintosh operating systems") →	family
Lisa OS → Lisa OS ("Macintosh System Software") →	influenced
MacWorks XL ("Macintosh System Software") → MacWorks XL →	operatingSystemEmulated
Component Pascal → NetBSD/mac68k ("classic Macintosh") →	targetPlatform
Frog ("classic Mac OS") →	associatedOperatingSystem
System 5 ("Macintosh System Software") →	brand
System 4 ("Macintosh System Software") →	branding
Classic Mac OS ("Mac OS 9.2.2") →	finalReleaseVersion
Classic Mac OS ("Platinum appearance (Mac OS 8)") →	notableFeature
Macintosh Quadra →	osFamily
Macintosh Toolbox ("Macintosh system software") →	partOf
System 4 ("System Software (classic Mac OS)") →	partOfSeries
Mac →	previousOperatingSystem
AppleTalk ("Macintosh System Software") →	relatedTechnology
Motorola 68000 family ("Mac OS (Classic)") →	supportedOperatingSystem
MFS ("Mac OS") →	usedOnOperatingSystem
Apple Desktop Bus Mouse →	usedWithOperatingSystem
System 4 ("Macintosh desktop metaphor") →	userInterface
Bud Tribble ("Macintosh system software") →	workedOn