Presentation Manager (PM) is the graphical user interface (GUI) that IBM and Microsoft introduced in version 1.1 of their operating system OS/2 in late 1988. == History == Microsoft began developing a graphic user interface (GUI) in 1981.
Presentation Manager (PM) is the graphical user interface (GUI) that IBM and Microsoft introduced in version 1.1 of their operating system OS/2 in late 1988. == History == Microsoft began developing a graphic user interface (GUI) in 1981.
Source: Wikipedia "Presentation Manager" · CC BY-SA 4.0
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