System 4

From WikiMac, Everyone's Mac Knowledgebase

System 4 is the fourth major upgrade of the Macintosh system software. First released in March 1987, it comprises of three versions in all.

[edit] Versions of System 4

• System 4.0
• System 4.1
• System 4.2

System 4
System 4.0 | System 4.1 | System 4.2
← System 3 | System 4 | System 5 →

Macintosh system software

Macintosh System: System 1 | System 2 | System 3 | System 4 | System 5 | System 6 | System 7 Mac OS: Mac OS 8 | Mac OS 9 | Mac OS X