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Technologies
Users
Years
Technologies in 1990
>
Operating Systems in 1990
1991→
←1989
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AmigaOS
(since 1985) 6
Apple DOS
(since 1980) 8
Berkeley Software Distribution
(since 1981) 3
Commodore DOS
(since 1981) 10
CP/M
(since 1981) 4
GEOS
(since 1986) 1
HP-UX
(since 1989) 1
IBM AIX
(since 1990, that's this year!) 1
IBM i
(since 1982) 2
Mac OS ("Classic")
(since 1984) 10
Microsoft Windows
(since 1988) 10
MS-DOS
(since 1982) 47
OS/2
(since 1989) 7
RISC OS
(since 1988) 4
SunOS
(since 1983) 4
System 6
(since 1986) 6
VMS
(since 1980) 8
Windows 3.1
(since 1988) 19