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System 7
System 7
(codenamed "Big Bang" and sometimes retroactively called
Mac OS 7
) is a single-user
graphical user interface
-based
operating system
for
Macintosh
computers. It was introduced on May 13, 1991, by
Apple Computer
. It succeeded
System 6
, and was the main Macintosh operating system until it was succeeded by
Mac OS 8
in 1997. Features added with the System 7 release included
virtual memory
, personal
file sharing
,
QuickTime
,
QuickDraw 3D
, and an improved user interface.
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