FILE- In this Monday, June 18, 2012, file photo, Microsoft CEO Steve Ballmer comments on the Windows 8 operating system before unveiling its new Surface, a tablet computer to compete with Apple's iPad at Hollywood's Milk Studios in Los Angeles. Microsoft Corp. reports quarterly financial results after the market closes on Thursday, July 19, 2012. (AP Photo/Damian Dovarganes, File)

Associated Press
FILE- In this Monday, June 18, 2012, file photo, Microsoft CEO Steve Ballmer comments on the Windows 8 operating system before unveiling its new Surface, a tablet computer  to compete with Apple's iPad at Hollywood's Milk Studios in Los Angeles. Microsoft Corp. reports quarterly financial results after the market closes on Thursday, July 19, 2012. (AP Photo/Damian Dovarganes, File)
FILE- In this Monday, June 18, 2012, file photo, Microsoft CEO Steve Ballmer comments on the Windows 8 operating system before unveiling its new Surface, a tablet computer to compete with Apple's iPad at Hollywood's Milk Studios in Los Angeles. Microsoft Corp. reports quarterly financial results after the market closes on Thursday, July 19, 2012. (AP Photo/Damian Dovarganes, File)
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