CES 2011 at Las Vegas saw more than 80 Tablet PCs by Popular gadget manufacturers. BlackBerry 4G PlayBook Tablet is one of the new addition to this. Sprint and Research In Motion (RIM) jointly launched their first Tablet.BlackBerry 4G PlayBook comes with high end hardware features to compete with Android Tablets and Popular Apple iPad 2, BlackBerry PlayBook 4G runs on a brand new operating system by QNX which specializes...