Microsoft sold nearly 10 copies of Windows 7 every second over the last month, according to numbers the company released Thursday.

Peter Klein, Microsoft's chief financial officer, told Wall Street analysts of the latest Windows 7 milestone. "With 175 million licenses sold to date, it is the fastest selling operating system ever, and now runs on over 15% of all PCs worldwide," Klein said during an afternoon earnings call.

A month ago, Microsoft announced that it had sold 150 million Windows 7 licenses.

By Microsoft's numbers, the company sold 25 million licenses during the 29 days between June 23 and July 21, a pace that represents sales of 9.97 copies of Windows 7 per second.

Full story: Computerworld