Here is a look at the life of Bill Gates, co-founder and chairman of Microsoft Corporation.
Personal: Birth date: October 28, 1955
Birth place: Seattle, Washington
Birth name: William Henry Gates III
Father: William Henry Gates II, attorney
Mother: Mary (Maxwell) Gates, schoolteacher
Marriage: Melinda (French) Gates (January 1, 1994-present)
Children: Phoebe Adele, 2002; Rory John, 1999; Jennifer Katharine, 1996
Education: Attended Harvard University, 1973-1975
Other Facts: Was number one on the Forbes World's Billionaires List (World's Richest People) for 12 consecutive years from 1995 to 2007.
Has donated more than $26 billion dollars to philanthropic causes through the Bill & Melinda Gates Foundation.
Microsoft is the world's largest software company.
Timeline: 1968 - Begins programming computers at age 13.
1972 - Co-founds a company called Traf-O-Data, which analyzes local traffic patterns, while still in school.
Summer 1972 - Congressional page in the U.S. House of Representatives.
1975 - Drops out of Harvard and co-founds Microsoft Corp. (formerly Micro Soft) with Paul Allen.
1977-1982 - President of Microsoft.
1980 - Develops MS-DOS (Microsoft Disk Operating System) for IBM. Two million copies are sold by 1984, and by the early 1990s, more than 100 million copies are sold.
1981-present - Chairman of the Board of Directors for Microsoft.
1985 - Gates introduces the Microsoft Windows operating system to compete with Apple.
Mid to late-1980s - Begins developing and promoting CD-ROM technology.
1987 - Becomes the youngest U.S. billionaire, worth $125 billion at 31 years old. That record is later broken by Mark Zuckerberg in 2010 and then Dustin Moskovitz in 2011.
1989 - Founder of Corbis, a digital image company.
May 1998 - The U.S. Department of Justice, 20 states and the District of Columbia file lawsuits accusing Microsoft of using illegal, anticompetitive and exclusionary practices.
January 2000 - Resigns as CEO of Microsoft and becomes chief software architect.