Bill Gates was born in 1955 in Seattle, Washington. He met his friend and future business partner Paul Allen in high school where they shared an interest in computers. In 1975, while still a student at Harvard University, Gates founded Microsoft with Allen. Microsoft grew rapidly and became the dominant manufacturer of computer software, with the Windows operating system becoming the most widely used in personal computers worldwide. Gates retired from full-time work at Microsoft and now focuses his efforts on his charitable foundation with his wife, the Bill and Melinda Gates Foundation, which works to promote health and education around the world.