OS/2

OS/2 is an operating system created by Microsoft and IBM and later developed by IBM exclusively. The name stands for "Operating System/2", because it was introduced as the preferred operating system for IBM's "Personal System/2 (PS/2)" line of second-generation Personal Computers.

Related Topics:
Operating system - Microsoft - IBM - Personal System/2 - PS/2 - Personal Computer

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OS/2 was intended as a protected mode successor of MS-DOS and Microsoft Windows. Notably, basic system calls were modeled after MS-DOS calls; their names even started with "Dos" and it was possible to link text mode applications in such a way that they could work on both systems ("bound" programs). Because of this heritage, in terms of look, feel and features, OS/2 is not unlike Windows in many ways; but it also shares similarities with Unix and XENIX.

Related Topics:
Protected mode - MS-DOS - Microsoft Windows - System call - Text mode - Unix - XENIX

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