It was based on the Intel 8086 family of microprocessors, particularly the IBM PC and compatibles. It was the most commonly used member of the DOS family of operating systems and was the main operating system for personal computers during the 1980s. MS-DOS MS-DOS (short for M icro s oft D isk O perating S ystem) is an operating system commercialized by Microsoft. Originally uploaded as 'PC DOS Command Window.gif' on 'PC DOS' is not short-name.) IBM PC DOS 6.3 IBM PC DOS 7 IBM PC DOS 2000 (IBM's last version ) Ī typical command line in PC-DOS. Naming and Versions IBM Personal Computer Disk Operation System 1.0 (short-name: PC DOS 1.0) IBM Personal Computer Disk Operation System 2.0 (short-name :PC DOS 2.0) IBM Personal Computer Disk Operation System 3.0 (short-name :PC DOS 3.0 ) IBM DOS 4.0 (IBM changed product name) IBM DOS 5.0 IBM PC DOS 6.1 (IBM changed product name again. However, at no time did IBM acquire the ownership of the source code of the operating system for its own PCs. PC DOS and MS-DOS were to be marketed separately: IBM selling to itself for the IBM PC, and Microsoft selling to the open market. The original 1981 arrangement between IBM and Microsoft was that Microsoft would provide the base product and that both firms would work on developing different parts of it into a more powerful and robust system, and then share the resultant code. PC-DOS IBM PC DOS is a DOS operating system for the IBM Personal Computer, sold throughout the 1980s and 2000s.

Ī simulated screenshot of 86-DOS running Seattle Computer Product's assembler and HEX2BIN conversion tool, as supplied with 86-DOS in 1981. The system was purchased by Microsoft and developed further as PC-DOS and MS-DOS. Ĩ6-DOS had a command structure and application programming interface that imitated that of Digital Research 's CP/M operating system, which made it easy to port programs from the latter.

Initially known as QDOS ( Quick and Dirty Operating System ) the name was changed to 86-DOS once SCP started licensing the operating system. Ĩ6-DOS 86-DOS was an operating system developed and marketed by Seattle Computer Products for its Intel 8086 -based computer kit. Operating systems categorized as Disk Operating System Disk operating system (DOS) is a shorthand term for several closely related operating systems that dominated the IBM PC compatible market between 19, or until about 2000 if one includes the partially DOS-based Microsoft Windows versions Windows 95, 98, and Me. ITE 229 OPERATING SYSTEMS “DISK OPERATING SYSTEMS” Group Leader: Ale May Villegas Group Members: Mei-reen Joy Dalhag Veronica Gajo Carren Azur Rodelia Dimatera

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