With 600 million sales, Windows 7 closes on XP
Microsoft has sold 600 million copies of Windows 7, and it now has around 40 percent of the installed base, according to Steven Guggenheimer, corporate vice president of Microsoft's original equipment manufacturer (OEM) division. This information was, however, incidental to his keynote speech at the Computex trade exhibition in Taiwan, which was mainly concerned with promoting Windows 8.