Microsoft unveiled the Surface on Monday, a new tablet computer that's expected to compete with Apple's iPad. The Surface is 9.3 millimeters thick and works on the Windows RT operating system. (June 19) Subscribe to the Associated Press: http://bit.ly/APYouTube Download AP Mobile: http://www.ap.org/mobile/ Associated Press on Facebook: http://apne.ws/c7lQTV Associated Press on Twitter: http://apne.ws/bTquhb Associated Press on Google+: http://bit.ly/zuTKBL