na 1975, na Albuquerque, New Mexico, Allen na Gates malitere ahịa a BASIC mmemme asụsụ ntụgharị okwu. Allen wee na mbụ aha nke "Micro-Soft" (a Nchikota "microcomputer" na "software"), dị ka a 1995 Fortune magazine isiokwu. Na 1980, mgbe Microsoft ama kwara inye IBM a disk sistemụ (DOS) maka mbụ IBM PC, ọ bụ ezie na ha ka na-adịghị mepụtara otu, Allen spearheaded a ndibiat maka Microsoft ịzụta QDOS (Ngwa ngwa na ruru unyi Operating System), dere site Tim Paterson, onye, n'oge ahụ, e n'ọrụ na Seattle Computer Ngwaahịa. N'ihi nke azụmahịa a, Microsoft bụ ike iji nweta a nkwekọrịta na-enye DOS na ga-emecha na-agba ọsọ na IBM si PC akara. Nke a pụtara na watershed na Microsoft akụkọ ihe mere eme na mere ka Allen na Gates si na Microsoft.
Microsoft