Microsoft purchased the 86-DOS, which was created and marketed by Seattle Computer Products, in 1980.
QDOS was a subset of CP/M, then Microsoft bought QDOS and made it MS-DOS. FOXTROT!
Microsoft Disc Operating System
MSDOS was officially released in 1981 by Microsoft.
No. Office 2007 requires Windows.
MicroSoft - Disk Operating System
Microsoft with Bill Gates he later left before MSDOS
PCDOS an IBM branded version of MSDOS, licensed to IBM. Eventually IBM abandoned it and MicroSoft took over direct marketing of MSDOS.
MS-DOS was based upon 86-DOS by Seatle Computer Works. When IBM developed their first PC, they approach Microsoft to write the operating system; at that time, Microsoft wrote computer applications and, in particular, languages - MSBASIC was the industry standard - and didn't have an operating system. Bill Gates realised the opportunity and bought the rights to 86-DOS which was renamed MS-DOS to supply for the IBM-PC.
There is no any software for MSDOS shell as MSDOS is itself a system software.
A disc operating System (DOS) which was marketed as MSDOS (MicroSoft Disc Operating System). It enabled the open platform, IBM Personal Computer, to be operated by typing in simple commands.
Start=>Run=>msdos
Microsoft was started in 1975 and Apple in 1976. They worked together on a BASIC programming language called AppleSoft BASIC - the name being a combination of Apple and Microsoftfor the Apple computer. Microsoft also produced a Z80 processor card as an add-on for the Apple II computer. Apple developed the Mac OS for their Macintosh computer, which first appeared in 1984, and licensed part of the Mac OS to Microsoft to use in their Windows operating system which appeared in 1985.