Everyone has heard of Bill Gates.Bill Gates was born the 28th at October, 1955, in Seattle. USA. From his parents Bill got a good business sense and a quick mind. His father is a lawyer and his late mother was a teacher and then a company director. After finishing school in 1973, Bill went to Harvard, America's most famous university.Microsoft, the business he started with a friend in 1975, has become the world's largest computer software company. One reason for his success is that Bill has always been very ambitious and hard-working.In 1980, Gates bought a small company which produced an operating system called DOS. He made some changes to it and renamed it MS-DOS. Bill Gates has written two books. The Road Ahead (1995) and Business and the Speed of Thought (1999). Both books are best-sellers. He is also fond of reading about science.For such a rich person, his life is simple, and he spends very little on himself. in 1994 he married Melinda French, a Microsoft employee.The couple has two children: a daughter, born in 1996, and a son, born in 1999.The Bill and Melinda Gates Foundation has already given $300 million to charity, and he says he plans to give away almost all of his wealth when he retires.