In 1975 Bill Gates was a student at Harvard, one of the top universities in the United States. At that time computers were large, expensive and difficult to use. Not many people had one at home. But Gates realised that computers would become smaller, cheaper and simpler inthe future. He also realised that people would need software for their computers. Gates formed a company and later dropped out of Harvard so he could develop the new sotware. Today Gates is the richest man in the would. He has a fortune of US$54 billion and his company Microsoft employs over 88,000 people in ninety-nine countries