11. Windows makes PCs easier to use than the old disk operating systems ( DOS ). 12. You can use Microsoft Windows 95, 3.1x, NT 4.0 or disk operating system ( DOS ). 13. DOS-11 was the PDP-11's first disk operating system , but was soon supplanted by more capable systems. 14. The Apple II disk operating system , known simply as DOS, augments the language to provide such abilities. 15. Later proposed uses for GLaDOS included implementation as a fuel line ice inhibitor and disk operating system . 16. DOS ( Disk Operating System ) was the operating system that brought the company its real success. 17. His little start-up company churned out something called the Microsoft Disk Operating System , or MS-DOS for short. 18. Z80 disk operating system ", and its success is partly due to the popularity of the Z80. 19. The disk operating system known as " File Control System " or " FCS " was designed in-house. 20. AmigaOS's disk operating system , AmigaDOS, which is a port of TRIPOS, bears some resemblance to DEC operating systems.
