MSX System

It was first released in the spring of 1983, and the free demo copies were sold with the magazine PC World, being the first program to be distributed on-disk with a magazine. However, Xenix was never sold to end users directly although it was licensed as many OEM software for sale. But in the mid eighty Microsoft had left the Unix business entirely. DOS (Disk Operating System) was the operating system that brought the company its real success. On August 12, 1981, after negotiations with Digital Research failed, IBM awarded a contract to Microsoft to provide a version of the CP/M operating system, which was chosen to be used in the next personal computer of IBM (PC). For this operation, Microsoft purchased a CP/M a copy called 86-DOS from Tim Paterson of Seattle Computer Products for less than $50,000, which IBM renamed PC-DOS. Due to the potential risk of infringement of copyright with CP/M, IBM put CP/M and PC-DOS to $ 240 and $40, respectively, and so PC-DOS became the standard because of its low price. Around 1983, in collaboration with numerous companies, Microsoft created a system for the personal computer, MSX, which had its own version of the DOS operating system, entitled MSX-DOS; This became relatively popular in Japan, Europe and South America.

Later, the market was flooded of IBM PC clones once Columbia Data Products successfully reproduce the IBM BIOS, quickly followed by Eagle Computer and Compaq. Selling applications CRM for clinics jointly with IBM allowed Microsoft to have control of its own derivative of QDOS, MS-DOS, and with the aggressive marketing of the operating system to manufacturers of clones of IBM-PC Microsoft step of small seller one of the major software vendors in the personal computer industry. With a copy of Apple Computer mouse on May 2, 1983, Microsoft continued to expand its line of products in other markets. This expansion included Microsoft Press, a division that published books, opened on July 11 the same year, which debuted with two titles: exploring the personal computer of IBM PC’s Peter Norton, and the book of the Apple Macintosh of Cary Lu. Ireland became the first international production to Microsoft in 1985, and on November 20 Microsoft released its first final version of Microsoft Windows, originally a graphical extension for its MS-DOS operating system. In August, Microsoft and IBM jointly developed a different operating system called OS/2. OS/2 was marketed in connection with new hardware designed by IBM, the PS/2. On February 16, 1986, Microsoft moved to Redmond, Washington. About a month later, on March 13, the company was published with an IPO, raising US $ 61 million to $21 per share. At the end of the trading day, the price had risen to 28 dollars per share. Microsoft finally released its first version of OS/2 for sale-licensed to the public.

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