They got MS-DOS from Microsoft.
IBM compatible was a term used in the eighties to describe personal computers that could run PC-DOS the IBM operating software. These days the term is redundant.
The original IBM PC, also known as the 5150, was was introduced on August 12, 1981.
D.O.S. it is an operating system, it is the base for windows. That is incorrect. DOS was not their first product. Their first program was ALTAIR BASIC in 1975. DOS wouldn't come around until the release of the IBM PC in 1981.
August 12, 1981
IBM (International Business Machines) set the standard for personal computers with their IBM PC, which was introduced in 1981. The IBM PC set the standard for hardware architecture and software compatibility, and was widely adopted by other manufacturers. Today, personal computers still follow the basic design principles established by IBM.
Microsoft makes software, not computers. International Business Machines, better known as IBM, invented the IBM PC, which much of Microsoft's software is designed for and is the type of computer you mean. It was first released in 1981. Microsoft provided the operating system, known as DOS (Disk Operating System). In subsequent years they released newer versions of DOS and eventually the various Windows operating systems that we use now, as well as other software that we use such as the Microsoft Office programs.
IBM compatible was a term used in the eighties to describe personal computers that could run PC-DOS the IBM operating software. These days the term is redundant.
The original IBM PC, also known as the 5150, was was introduced on August 12, 1981.
The first simple "operating system" was a program called IBSYS that IBM released for the IBM 7090 transistorized computer in 1960. IBSYS was derived from a program IBM's customer General Motors had written for their IBM 701 and IBM 704 computers and contributed to the IBM computer users group SHARE. SHARE had rewritten General Motor's original program, calling it SHARE Operating System for the IBM 704 and IBM 709 which was the version adapted by IBM to make IBSYS. IBSYS was not like modern operating systems however and would now be called a batch monitor program..
There is no registration for this software when not purchased from IBM. IBM no longer sells the software. This no registration required.
The operating system for the very early IBM PCs was DOS.I can't recall if it was already called MS-DOS or still was PC-DOS, this name change occured somewhen in the early 80s.
os for IBM
Remote logon software by IBM
IBM BASIC was created in 1981.
DOS, which stands for Disk Operating System.
Bill Gates and Microsoft initially partnered with IBM in 1980 when IBM was developing its first personal computer. Rather than providing their own operating system, Gates suggested that IBM license an operating system from another company. Microsoft then purchased and modified an existing OS, QDOS, to create MS-DOS, which IBM adopted for its PC. This decision marked a significant turning point, allowing Microsoft to retain control over its software while enabling IBM to enter the personal computer market.
IBM Rational is a service provided by IBM. IBM Rational helps with software and systems development. It is supposed to help software be more profitable and and improve productivity.