OS, Windows

Windows 7: 450 million copies

Microsoft announced a significant achievement of Windows 7 in October 2009 when it was released a new operating system, the company managed to sell 450 million licenses. The figure looks more impressive if you divide it by the number of days – one day is sold almost 650,000 copies of the OS.

For comparison, a failed Vista for about the same period has sold 180 million copies of the volume, or approximately 335 000 copies a day. Moreover, during the 2.5 years of life Windows XP sold only 210 million units.

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