Today on Microsoft Windows 8 launch event, Microsoft CEO Steve Ballmer and Windows manager Steven Sinofsky shared with us some data. Let's see what's happening to Windows.Since launch, Windows 7 system gains a total of 670 million upgrade and 400 million new PC installed with Windows 7.Microsoft's cloud storage service Skydrive, 200 million users share 11 billion photos and 550 million documents. new 2PB file uploaded monthly.(1PB = 1024TB)Windows 8 has been tested in 190 countries for 1.24 billion hours.Windows 8 to reconnect the WiFi only needs one second, while windows 7 takes 15 seconds.Th...