1956 - Born on the 24th of March in Detroit, Michigan.
1973 - Graduated from Detroit Country Day School with a grade point average of 4.0 and was the valedictorian of his class.
1977 - Graduated magna cum laude with a Bachelor of Arts degree in applied mathematics and economics.
Ballmer worked for two years at Procter & Gamble as an assistant product manager.
1980 - Became Microsoft's 24th employee and the first business manager hired by Gates.
1981 - He was owned 8% of the Microsoft when it becomes incorporated.
Headed several divisions within Microsoft, including Operating Systems Development, Operations, and Sales and Support.
1998 - He was promoted to president of Microsoft.
2000 - Chief executive officer when Gates stepped down from that position.
Ballmer married Connie Snyder (a Microsoft employee) and has three children.
2004 - He made headlines by claiming that the most common format of music on iPods is "stolen".
2006 - Forbes magazine ranked Ballmer as the 24th richest person in the world
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