Paul Allen
Person
Programming languages as a business. Allen and Bill Gates wrote a BASIC interpreter for the Altair 8800 in 1975, with Allen building an Altair emulator on a university minicomputer so they could develop it before seeing the real machine. Microsoft's first products were language tools such as BASIC, FORTRAN and COBOL for microcomputers, long before Windows. Allen left Microsoft in 1983 after illness and died in 2018.
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