WASHINGTON, DC.- The National Portrait Gallery has installed a portrait of Bill and Melinda Gates by Jon Friedman in the museum’s “Recent Acquisitions” exhibition. “I am thrilled to accept this commissioned painting of Bill and Melinda Gates into our collection,” said Martin Sullivan, director of the museum. “Jon Friedman created a compelling portrait that tells the story of their foundation’s work.” Bill Gates left Harvard as an undergraduate to write software for the earliest personal computers. His company, Microsoft, developed a computer operating system for wide-scale nontechnical use that spurred on the personal computer revolution begun in the 1980s. Microsoft remains a leader in the industry. Melinda French Gates has degrees in computer science, economics and business, and was employed by Microsoft. The couple created the Bill & Melinda Gates Foundation in 2000 with the mission