The History of the Disk Operating System (DOS) - 998 Words

The History of the Disk Operating System (DOS) At the outset, before the advent of user friendly operating systems, computers were run using the operating system CP/M (Control Program for Microcomputers). The program itself looked simple, but the complexity of its use meant that not many fully understood how to use it. As the program was also limited in use, since it was designed for 8-bit systems, a new operating system was needed when 16-bit IBM systems came out. IBM tried to purchase CP/M from its inventor Gary Kildall, but he proved to be elusive and refused to sell. IBM through Microsoft and owner Bill Gates, acquired and licensed a similar program, the Q-DOS program. The first commercially available operating system,†¦show more content†¦Some say that MS-DOS was a more skillful piece of programming. (Ceruzzi, 271) Since the first release of MS-DOS, Microsoft has produced and released many more versions. Windows 3.1 used DOS as the operating system, but had a gr aphical user interface between the user and the operating system. Significant improvements in 1988 with version 4.0 were a graphical/mouse interface and in 1991 with version 5.0 Microsoft added a full-screen editor, utilities to undelete and unformat, and task swapping. Also Qbasic was introduced. A final version of DOS was released in 1995 by IBM called PC-DOS 7 and by Microsoft called MS DOS 7.0. In August of 1995, Microsoft introduces a new graphical user interface called Windows 95 and DOS is only used as part of the underlying operating system. (DOS (Disk Operating System)) Conclusion Microsoft is a company that came to dominate the home and business computer market, by capitalizing on the need for software that was user friendly. Today, Microsoft software is used by almost every corporation in America. References Bellis, M. (n.d.). Putting Microsoft on the map: History of the MS-DOS Operating Systems, IBM Microsoft. In About.com Inventors. Retrieved January 14, 2012, from http://inventors.about.com/od/computersoftware/a/Putting-Microsoft-On-The-Map.htm Ceruzzi, P. E. (1998). A history of modern computing (pp. 270-272). London,Show MoreRelatedUses Of In Operating Systems1564 Words   |  7 PagesUses of Virtualisation in Operating Systems Virtualisation in operating systems is a wide ranging subject relating to many topics within operating systems. Waldspurger and Rosenblum define virtualisation in their article I/O virtualization as â€Å"decoupling the logical from the physical, introducing a level of indirection between the abstract and the concrete.† [1] In this essay I will briefly outline some of the many types of Virtualisation as well as talk about benefits and limitations virtualisationRead MoreComputer Software : Operating System Software1158 Words   |  5 Pagessearch anything on the internet. 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