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System 7 (codenamed Big Bang and later renamed Mac OS 7) is a version of
the Macintosh operating system, single-user operating system of the
Macintosh computer, introduced in May 13, 1991. It succeeded System 6, and
was the main Mac operating system until it was succeeded by Mac OS 8 in
1997. Features added with the System 7 release included cooperative
multitasking, virtual memory, personal file sharing, an improved user
interface look, QuickTime, and QuickDraw 3D.
"System 7" is often used generically to refer to all 7.x versions. With
the release of version 7.6 in 1997, Apple officially renamed the operating
system "Mac OS", a name which had first appeared on System 7.5.1's boot
screen. System 7 was developed for the Motorola 68k processor, but was
ported to the PowerPC after Apple adopted the new processor.
Features Compared with System 6, System 7 offered:
· Built-in
