Amelio has more than three decades of leadership experience in technology and business. He has served as the CEO and chairman of Apple Computer; the president, CEO and chairman of National Semiconductor; and the president of Rockwell Communication Systems, a unit of Rockwell International. The successful transformations of these companies resulted in increases in investor value of more than $9 billion USD. Currently, Amelio is on the Board of Directors of AT&T, Inc. Prior to