A combination photo shows Microsoft Corp CEOs in its 39-year history - the founder of Microsoft Bill Gates (L), in New York September 24, 2013, then CEO Steve Ballmer (C) in New York October 25, 2012 and Satya Nadella (R), newly named chief executive officer of Microsoft Corp in an undated Microsoft handout photograph released on February 4, 2014. REUTERS/Files (L and C)/Microsoft (R)/Handout via Reuters
{}