Bill Gates : biography
At the end of the ban, the four students offered to find bugs in CCC’s software in exchange for computer time. Rather than use the system via Teletype, Gates went to CCC’s offices and studied source code for various programs that ran on the system, including programs in Fortran, Lisp, and machine language. The arrangement with CCC continued until 1970, when the company went out of business. The following year, Information Sciences, Inc. hired the four Lakeside students to write a payroll program in Cobol, providing them computer time and royalties. After his administrators became aware of his programming abilities, Gates wrote the school’s computer program to schedule students in classes. He modified the code so that he was placed in classes with mostly female students. He later stated that "it was hard to tear myself away from a machine at which I could so unambiguously demonstrate success." At age 17, Gates formed a venture with Allen, called Traf-O-Data, to make traffic counters based on the Intel 8008 processor. In early 1973, Bill Gates served as a congressional page in the US House of Representatives.
Gates graduated from Lakeside School in 1973. He scored 1590 out of 1600 on the SAT and enrolled at Harvard College in the autumn of 1973. While at Harvard, he met Steve Ballmer, who later succeeded Gates as CEO of Microsoft.
In his sophomore year, Gates devised an algorithm for pancake sorting as a solution to one of a series of unsolved problems presented in a combinatorics class by Harry Lewis, one of his professors. Gates’s solution held the record as the fastest version for over thirty years; its successor is faster by only one percent. His solution was later formalized in a published paper in collaboration with Harvard computer scientist Christos Papadimitriou.
Gates did not have a definite study plan while a student at Harvard and spent a lot of time using the school’s computers. Gates remained in contact with Paul Allen, and he joined him at Honeywell during the summer of 1974. The following year saw the release of the MITS Altair 8800 based on the Intel 8080 CPU, and Gates and Allen saw this as the opportunity to start their own computer software company. Gates dropped out of Harvard at this time. He had talked this decision over with his parents, who were supportive of him after seeing how much Gates wanted to start a company.
Gates married Melinda French on January 1, 1994. They have three children: daughters Jennifer Katharine (b. 1996) and Phoebe Adele (b. 2002), and son Rory John (b. 1999). The family resides in the Gates’s home, an earth-sheltered house in the side of a hill overlooking Lake Washington in Medina. According to King County public records, as of 2006 the total assessed value of the property (land and house) is $125 million, and the annual property tax is $991,000.
Gates’s estate has a swimming pool with an underwater music system, as well as a gym and a dining room.
Also among Gates’s private acquisitions is the Codex Leicester, a collection of writings by Leonardo da Vinci, which Gates bought for $30.8 million at an auction in 1994. Gates is also known as an avid reader, and the ceiling of his large home library is engraved with a quotation from The Great Gatsby. He also enjoys playing bridge, tennis, and golf.
Gates was number one on the Forbes 400 list from 1993 through to 2007 and number one on Forbes list of The World’s Richest People from 1995 to 2007 and 2009. In 1999, his wealth briefly surpassed $101 billion, causing the media to call Gates a "centibillionaire". Despite his wealth and extensive business travel Gates usually flew coach until 1997, when he bought a private jet. Since 2000, the nominal value of his Microsoft holdings has declined due to a fall in Microsoft’s stock price after the dot-com bubble burst and the multi-billion dollar donations he has made to his charitable foundations. In a May 2006 interview, Gates commented that he wished that he were not the richest man in the world because he disliked the attention it brought. In March 2010, Gates was the second wealthiest person behind Carlos Slim, but regained the top position in 2013 according to the Bloomberg Billionaires List.