WINDOWS HTC

This new operating system was presented with the name of Windows Phone 7 Series, and thereafter to make the logo more streamlined and easy to remember, Microsofthas decided to eliminate the "Series".
Microsoft stated that Windows Phone 7 would be sold in time for the Christmas holidays of 2010. Following the worldwide launch on 11 October 2010 , Europe's new mobile operating system has been put on sale October 22, 2010, to coincide with the release of the first models of devices targati LG, HTC and Samsung. For the launch in the U.S. will have to await November.
In July 2010 it was released the beta of Windows Phone Developer Tools, a free software package for developing applications for Windows Phone 7, which containsVisual Studio 2010 Express for Windows Phone, Windows Phone Emulator,Silverlight for Windows Phones, Microsoft Expression Blend for Windows Phone and XNA Game Studio 4.0.

Windows Phone 7 has been developed rapidly. One
consequence is that the softwaredeveloped for previous
series do not work on the new operating system. LarryLieberman,
chief development of the Microsoft Mobile Developer
Experience, said: "Ifwe had more time and resources, we
could do something with regard to backward compatibility."Lieberman said that
Microsoft has tried to look at the marketphones in a
different way, having in mind the individual end user and enterprise
networks at the same time. Terry Myerson, development engineer of WindowsPhone, said, "with
the development of capacitive screens, without pen, and
the adoption of particular choices of hardware for the Windows Phone
7, we had to stop the application compatibility of Windows Mobile