who was the programmer of ms-dos operating system
Tim Paterson
title: MS-DOS text: early versions of Windows ran as a GUI. It is a flexible operating system, and consumes negligible installation space. MS-DOS was a renamed form of 86-DOS owned by Seattle Computer Products, written by Tim Paterson. Development of 86-DOS took only six weeks, as it was basically a clone of Digital Research's CP/M (for 8080/Z80 processors), ported to run on 8086 processors and with two notable differences compared to CP/M; an improved disk sector buffering logic and the introduction of FAT12 instead of the CP/M filesystem. This first version was shipped in August 1980. Microsoft, which needed an operating system for title: MS-DOS text: was the result of the language developed in the seventies that was used by IBM for its mainframe operating system. Microsoft acquired the rights to meet IBM specifications. IBM licensed and re-released it on August 12, 1981 as PC DOS 1.0 for use in their PCs. Although MS-DOS and PC DOS were initially developed in parallel by Microsoft and IBM, the two products diverged after twelve years, in 1993, with recognizable differences in compatibility, syntax, and capabilities. During its lifetime, several competing products were released for the x86 platform, and MS-DOS went through eight versions, until development ceased in 2000. title: MSX-DOS text: MSX-DOS MSX-DOS is a discontinued disk operating system developed by Microsoft for the 8-bit home computer standard MSX, and is a cross between MS-DOS 1.25 and CP/M-80 2. MSX-DOS and the extended BASIC with 3½-inch floppy disk support (known as MSX DOS Disk Operating System) were simultaneously developed by Microsoft and Spectravideo as a software and hardware standard for the home computer MSX standard, to add disk capabilities to BASIC and to give the system a cheaper software medium than Memory Cartridges, and a more powerful storage system than cassette tape (See SVI MSX User Manual (M-246) 1985 (Spectravideo MSX title: MSX-DOS text: working from the same code base. Paterson spent three days in Tokyo figuring out the problems and came back to Seattle. Chris Larson from Microsoft and Jay Suzuki visited Paterson in Seattle at the end of February and early March 1984. They brought an MSX machine with an in-circuit emulator (ICE) for debugging. They got everything working and on 23 April 1984, Microsoft accepted delivery and made the final payment for MSX-DOS to Paterson. At the time MSX-DOS was written, there was only one popular disk operating system for 8-bit Intel 8080 compatible microprocessors, which was Digital Research's CP/M-80 system. title: MS-DOS text: MS-DOS MS-DOS ( ; acronym for Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and some operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system). MS-DOS was the main operating system for IBM PC compatible personal computers during the 1980s and the early 1990s, when it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system. MS-DOS