A Bill Gates business card obtained on Nov. 6, 1980, during a visit to the Microsoft co-founder's Bellevue, Wash., office.

Bill Gates helped found Microsoft in the mid-1970s, and the company would revolutionize PC operating systems with its MS-DOS software, laying the framework for what would eventually become Windows.

Bill Gates talks about Microsoft's 50th anniversary, parallels between AI and the early days of the PC, and where he sees the next big opportunities for innovation.

Bill Gates will donate 99% of his remaining tech fortune to the Gates Foundation, which will now close in 2045, earlier than previously planned. Today, that would be worth an estimated $107 billion.

Bill Gates picked up a passion for politics while working as a congressional page. While computers were still a "big unknown" in 1972, politics was a potential backup plan for Gates. In his memoir ...