Gates and Allen had been buddies and fellow Basic programmers at Lakeside School in Seattle. Allen graduated before Gates and enrolled at the University of Washington. They built a computer based on an Intel 8008 chip and used it to analyze traffic data for the Washington state highway department, doing business as Traf-O-Data.
By Randy Alfred
Full Story: http://www.wired.com/science/discoveries/news/2008/04/dayintech_0404