ความคิดเห็นที่ 121
IBM-DOS <---- ฐานของระบบ ในเวลาต่อมา
MS-DOS <---- ผู้นำความแตกต่าง
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ส่วนของ CP/M นี่อ่านเอาเองหล่ะกันครับอันนี้เกินความสามารถที่จะบอกได้เพราะตอนนั้นยังเป็นวุ้นอยู่ -_-"
http://en.wikipedia.org/wiki/CP/M
จริงๆ แล้ว DOS นั้นเป็นของ Seattle Computer Products ครับ ชื่อ 86-DOS หรือ QDOS ครับ แล้วนาย bill ให้ pual allen ไปซื้อมาในราคา 50,000 $ แล้วไปขายให้กับ IBM แล้วเปลี่ยนชื่อเป็น MS-DOs ตอนเสนอชื่อกับ IBM ครับ แล้วหลังจากนั้น IBM นั้น ถ้าใส่ในเครื่อง IBM จะใช้ชื่อ PC-DOS ครับ บางคนอาจเรียกว่า IBM-DOs ก็ได้ แต่ ถ้า MS ขาย DOS ให้กับคนอื่นจะใช้ชื่อว่า MS-DOS ครับ
อ้างอิงจาก
http://en.wikipedia.org/wiki/DR-DOS
http://en.wikipedia.org/wiki/MS-DOS
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History for MS-DOS
Microsoft's disk operating system, MS-DOS was the first operating system for the IBM PC (branded as PC-DOS) , and until recently was widely used on the PC compatible platform (its usage has gradually been replaced on consumer desktop computers with various generations of the Windows operating system). It was originally released with the PC in 1981 and had eight major versions before Microsoft stopped development in 2000. It was the key product in Microsoft's growth from a programming languages company to a diverse software development firm, providing the company with essential revenue and marketing resources.
History
MS-DOS was created by computer manufacturer Seattle Computer Products (SCP) as 86-DOS (because it was designed to run on the Intel 8086 processor), but was commonly known as QDOS (Quick and Dirty Operating System). In a sequence of events that would later inspire much folklore, Microsoft licensed QDOS to IBM on behalf of SCP. Microsoft acquired the system for only ,000 from SCP shortly before the PC's release.
* PC DOS 1.0 - August, 1981 - Initial release with the first IBM-PC
* PC DOS 1.1 - May, 1982
* MS-DOS 1.25 - May, 1982 - First release for non-IBM hardware
* MS-DOS 2.0 - March, 1983 - Introduced features from Unix such as subdirectories, handle-based file operations, command input/output redirection, and pipes. Fearing copyright infringment complaints from AT&T, Microsoft decided to use backslashes as pathname separators rather than normal forward-slashes.
* PC DOS 2.1 - October, 1983
* MS-DOS 2.11 - March, 1984
* MS-DOS 3.0 - August, 1984
* MS-DOS 3.1 - November, 1984
* MS-DOS 3.2 - January, 1986 - Supported 2 hard disk partitions of up to 32MB, one primary and one "logical drive" in an "extended partition"
* PC DOS 3.3 - April, 1987
* MS-DOS 3.3 - August, 1987 - Supported multiple logical drives
* MS-DOS 4.0 - June, 1988 - actually derived from IBM's codebase rather than the reverse
* PC DOS 4.0 - July, 1988 - added the DOS Shell, a graphical menu selector, & support for hard disks of >32MB using the format from Compaq DOS 3.31. Also added many bugs and offered less free conventional memory than before. Generally regarded as an unsuccessful release and to be avoided
* MS-DOS 4.01 - November, 1988 - bug-fix release
* MS-DOS 5.0 - June, 1991 - In response to DR-DOS 5.0, adds comparable features to that product: memory management, full-screen editor, QBasic programming language, online help, and DOS Shell gains task switcher. See DR-DOS article for more information
* MS-DOS 6.0 - March, 1993 - Response to DR-DOS 6.0. Added DoubleSpace disk compression (copied from Stacker) and other features
* MS-DOS 6.2 - November, 1993 - Bug fix release
* MS-DOS 6.21 - February, 1994 - Following Stac lawsuit, removed DoubleSpace disk compression
* PC DOS 6.3 - April, 1994
* MS-DOS 6.22 - June, 1994 - Last stand-alone version. DoubleSpace replaced with non-infringing but compatible DriveSpace tool
* PC DOS 7.0 - April, 1995 - Bundles Stacker in place of DriveSpace
* Windows 95/MS-DOS 7.0 - August, 1995 - First version not released stand-alone
* Windows 95 OSR2/MS-DOS 7.1 (AKA Windows 95B) - August, 1996 - Added support for FAT32 file system
* Windows 98 - June, 1998 - Embedded DOS substantially unchanged from Win95B
* Windows Me/MS-DOS 8.0 - September 14, 2000 - Final version of MS-DOS. Removes SYS command, ability to boot to command line and other features
* PC DOS 2000 - Year 2000-compliant version with minor additional features. Final member of the MS-DOS family
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DR-DOS
DR-DOS is an MS-DOS-compatible operating system for IBM PC-compatible personal computers, originally developed by Gary Kildall's Digital Research and derived from CP/M-86.
The first version was released in May, 1988. Version numbers were chosen to reflect features relative to MS-DOS; the first version promoted to the public was DR-DOS 3.41, which offered comparable but better features to the massively successful MS-DOS 3.3 - and Compaq's version, Compaq DOS 3.31. (Compaq's variant was the first to introduce the system for supporting hard disk partitions of over 32MB which was later to become the standard used in MS-DOS 4.0 and all subsequent releases.)
At this time, MS-DOS was only available bundled with hardware, so DR-DOS achieved some immediate success as it was possible for consumers to buy it through normal retail channels. Also, DR-DOS was cheaper to license than MS-DOS. As a result, DRI was approached by a number of PC manufacturers who were interested in a third-party DOS, and this prompted several updates to the system.
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IBM DOS
Also referred to as PC DOS (MS-DOS) . Text based Operating system similar to Microsoft's DOS, but only sold with by IBM. IBM DOS and MS-DOS were very similar until the release of MS-DOS 6.0.
จากคุณ :
Xel'Naga 
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21 พ.ค. 48 20:10:08
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