Following the release of the Altair 8800, Bill Gates, as managing director of Microsoft called the creators of the new microcomputer, Micro Instrumentation and Telemetry Systems (Micro Instrumentation Telemetry Systems) (MITS), offering an implementation language BASIC programming for the system. After the demonstration, MITS agreed to distribute Altair BASIC. Gates left Harvard University and moved to Albuquerque, New Mexico where MITS was located, and founded with Paul Allen, Microsoft in 1975. The first international office of the company was opened on 1 November 1978 in Japan under the name “ASCII Microsoft” (now known as Microsoft Japan). On 1 January 1979, Microsoft moved to Bellevue in Washington. On 11 June 1980, Steve Ballmer joined the company. Ballmer happen after Bill Gates as Microsoft CEO.The old Microsoft logo Microsoft’s first products after its founding, other than BASIC interpreters, would COBOL and Fortran compilers. The first operating system that the company publicly released was a variant of Unix in 1979. AT T acquired through a distribution license, Microsoft dubbed Xenix, and hired to adapt its operating system to several platforms. Xenix was transferred to Santa Cruz Operation, which adapted the system for microprocessors 80,286 in 1985 under the name of SCO UNIX. DOS (Disk Operating System) was the operating system that brought the company its first success. In August 1981, after negotiations failed with Digital Research, IBM, Microsoft agreed to provide a version of an operating system CP / M, which was designed for the IBM PC. For this idea, Microsoft bought Seattle Computer Products a clone of CP / M called 86-DOS, which IBM renamed to PC-DOS.Eventually, the market then witnessed a flood of IBM PC clones after Columbia Data Products successfully cloned the IBM BIOS. Aggressive marketing by MS-DOS to manufacturers of IBM-PC clones, Microsoft rose from a small competitor to become one of the leading suppliers of software for personal computers. industry. The company expanded into new markets with the launch of Microsoft mouse 1983 product that was originally manufactured by them, also highlight the creation of a division named Microsoft Press.