2010 - 2011 Yearly Calendar Wallpaper 1024 x 768
A yearly Calendar has 12 months, 52 weeks & 365 days, it's a system of timekeeping that defines the beginning & length & divisions of a year. Windows 7 is the latest public release version of Microsoft Windows, a series of operating systems produced by Microsoft for use on personal computers, including home and business desktops, laptops, netbooks, tablet PCs, and media center PCs. Windows 7 was released to manufacturing on July 22, 2009, and reached general retail availability on October 22, 2009, less than three years after the release of its predecessor, Windows Vista. Windows 7's server counterpart, Windows Server 2008 R2, was released at the same time.
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