Bill Gates Timeline By coolruchit Oct 28, 1955 William Henry Gates III (Bill Gates)was born. Sep 21, 1967 Gates is enrolled at Lakeside School, Seattle. Sep 21, 1973 Runs through the university’s most hard mathematics and graduate level computer science courses. Sep 21, 1975 Gates called MITS, the maker of the world's 1st personal computer. Sep 21, 1976 Gates and Allen register the trademark "Microsoft." Sep 21, 1977 He takes a second leave of absence from Harvard and sets up Microsoft. Sep 21, 1986 At age 31, Gates becomes the youngest billionaire ever. Sep 21, 1989 Gates founds Corbis, an archive of art and photography. Sep 22, 1994 Gates weds French, the couple goes on to have three children. Jul 22, 1995 Gates becomes the world’s richest man. Sep 22, 1999 Gates publishes another best-selling book, Business @ the Speed of Thought. Sep 22, 2000 Gates steps down as CEO of Microsoft. Sep 22, 2007 Gates graduates from Harvard; the university awards him with an honorary degree. Sep 22, 2008 Gates loses his spot as the richest man on the planet.