Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: N'afọ 1975, na Albuquerque, New Mexico, Allen na Gates malitere ire ahịa BASIC asụsụ ntụgharị asụsụ mmemme. Allen bịara na aha mbụ nke "Micro-Soft" (ngwakọta nke "microcomputer" na "software"), dị ka a 1995 Fortune magazine isiokwu. Na 1980, mgbe Microsoft kwara nkwa na-anapụta IBM a disk sistemụ arụmọrụ (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, na-arụrụ ọrụ na Seattle Computer Ngwaahịa. N'ihi azụmahịa a, Microsoft nwere ike ijide nkwekọrịta iji nye DOS nke ga-emecha na-agba ọsọ na akara PC nke IBM. Nkwekọrịta a na IBM gosipụtara mmiri dị na akụkọ ihe mere eme nke Microsoft nke dugara Allen na Gates na akụ na ụba na ihe ịga nke ọma. Allen hapụrụ Microsoft n'ụzọ dị irè na 1982 mgbe ọ natara nchoputa nke lymphoma Hodgkin. A kọrọ na Gates gwara Allen ka o nye ya ụfọdụ n'ime òkè ya iji kwụọ ụgwọ maka ọrụ dị elu nke Gates na-arụ. Dị ka Allen si kwuo, Gates kwuru na ebe ọ bụ na "o mere ihe fọrọ nke nta ka ọ bụrụ ihe niile na BASIC", a ga-ekewa ụlọ ọrụ ahụ 60 <unk> 40 na ihu ọma ya. Allen kwenyere na ndokwa a, nke Gates mechara kwughachi na 64 <unk> 36. Na 1983, Gates gbalịrị ịzụta Allen na $ 5 kwa òkè mana Allen jụrụ ma hapụ ụlọ ọrụ ahụ na òkè ya. Nke a mere Allen onye ijeri mgbe Microsoft gara n'ihu ọha. Allen gbara arụkwaghịm n'ọkwa ya na ndị isi oche Microsoft na November 9, 2000. Ọ nọgidere dị ka onye ndụmọdụ ndụmọdụ dị elu nke ndị isi ụlọ ọrụ ahụ. Na Jenụwarị 2014, ọ ka nwere 100 nde mbak nke Microsoft.  Ajụjụ: Olee ụlọ ọrụ nwetara nkwekọrịta?
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