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DOS commonly refers to the family of closely related operating systems which dominated the IBM PC compatible market between 1981 and 1995 (or until about 2000, if Windows versions 95 and 98 are included) : PC-DOS, MS-DOS, FreeDOS, DR-DOS, Novell-DOS, OpenDOS, PTS-DOS, ROM-DOS and several others. Of these, MS-DOS from Microsoft was the most widely used. These operating systems ran on IBM PC type hardware using the Intel x86 CPUs or their compatible cousins from other makers. MS-DOS is still common today and was the foundation for many of Microsoft's operating systems (from Windows V1.00 through Windows Me). MS-DOS was later abandoned as the foundation for their operating systems.

History


MS-DOS (and the IBM PC-DOS which was licensed therefrom), and its predecessor, QDOS, was an imitation of CP/M (Control Program / (for) Microcomputers) — which was the dominant operating system for 8-bit Intel 8080 and Zilog Z80 based microcomputers.

It was first developed at Seattle Computer Products by Tim Patterson as a variant of CP/M-80 from Digital Research, but intended as an internal product for testing SCP's new 8086 CPU card for the S-100 bus. It did not run on the 8080 (or compatible) CPU needed for CP/M-80. It was called QDOS, among several other names. Microsoft licensed it from SCP, made changes and licensed the result to IBM (sold as PC-DOS) for its new 'PC' using the 8088 CPU (internally the same as the 8086), and to many other hardware manufacturers. In the later case it was sold as MS-DOS.

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http://ego.globo.com/Gente/Noticias/0,,MUL1435579-9798,00-PRETA+GIL+RECOLHE+DOACOES+PARA+VITIMAS+DOS+DESABAMENTOS+EM+ANGRA+DOS+REIS.html
MignonRJ (Andrea Mignon) Tue, 05 Jan 2010 19:05:48 -0000
http://ego.globo.com/Gente/Noticias/0,,MUL1435579-9798,00-PRETA+GIL+RECOLHE+DOACOES+PARA+VITIMAS+DOS+DESABAMENTOS+EM+ANGRA+DOS+REIS.html
Um dos maiores nomes da música fala sobre sua trajetória pessoal e profissional no especial “Minha Vida:Elton John” hoje, às 21h, no GNT(41)
skybrasil (Sky Brasil) Tue, 05 Jan 2010 19:05:48 -0000
Um dos maiores nomes da música fala sobre sua trajetória pessoal e profissional no especial “Minha Vida:Elton John” hoje, às 21h, no GNT(41)
Sérgio http://producao.bbb.globo.com/diariodaproducao/2010/01/05/conheca-os-selecionados/ vai ganhar o BBB10. A revolta dos nerds emos
brunolfernandes (Bruno Fernandes) Tue, 05 Jan 2010 19:05:47 -0000
Sérgio http://producao.bbb.globo.com/diariodaproducao/2010/01/05/conheca-os-selecionados/ vai ganhar o BBB10. A revolta dos nerds emos
@fabioricotta brincou... essa parada de twittes no BBB é dos vera?
SrSeuPanda (Panda) Tue, 05 Jan 2010 19:05:47 -0000
@fabioricotta brincou... essa parada de twittes no BBB é dos vera?
ok ler e ler foi o que fiz hj mas naff cansei e se continuar chovendo desanimo mil de ir ver jogo dos meninos...
lu_junq (Luciana Junqueira) Tue, 05 Jan 2010 19:05:47 -0000
ok ler e ler foi o que fiz hj mas naff cansei e se continuar chovendo desanimo mil de ir ver jogo dos meninos...
@heyisjana Ahhh colega, as vezes tenho dúvidas dos seus CALORES, ahsuahushsuahua... Principalmente qnd vc enche a cara e entra no msn, ahus
angelvet (Angélica O. Silveira) Tue, 05 Jan 2010 19:05:47 -0000
@heyisjana Ahhh colega, as vezes tenho dúvidas dos seus CALORES, ahsuahushsuahua... Principalmente qnd vc enche a cara e entra no msn, ahus

 
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Programming Ltd. - Complete payroll system for one company or multi-company use. Versions consist of Payroll Canada and Payroll USA software. Also T4 forms and W-2 forms preparation software. [MSDOS]
Meta Description: [ Download shareware payroll programs for USA and Canada, also programs to print U.S. W-2 and Canadian T4 Forms ]

Fire Department Clerical Management Software - Small to medium sized volunteer fire departments can track their personnel, equipment and activity. Runs under Windows 95/98 and DOS 5.0 or greater.

Gonzo Retro - A dos freeware and shareware archive of a few games and apps.

Medlin Accounting - Accounting package includes a general ledger with modules for accounts receivable, accounts payable, payroll and invoicing.
Meta Description: [ Payroll Software by Medlin Accounting - Easy to use payroll and bookkeeping software. No monthly fee or internet connection required. ]

QuickView - DOS based shareware multimedia file viewer with native support for AVI, MOV and MPEG videos. Also plays MP3, WAV and many other file formats.
Meta Description: [ DOS based multimedia viewer with native support for AVI (incl. DivX videos), MOV and MPEG videos. Also plays MP3, WAV, Ogg Vorbis and many other file formats ]

The Paper Saver - Printer Utility for Deskjets and Lasers printers. The program can print up to 8 pages of text on just one sheet of paper in a tiny, but very readable font. [DOS 3.0 or higher]
Meta Description: [ The program can print up to 8 pages of text on just one sheet of paper in a tiny, but very readable font. ]

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