Apple co-founder Steve Wozniak, waves to students as he enters the ceremony to deliver a commencement speech at the University of California at Berkeley on
Apple co-founder Steve Wozniak, waves to students as he enters the ceremony to deliver a commencement speech at the University of California at Berkeley on Saturday, May 18, 2013 in Berkeley, Calif. (AP Photo/Tony Avelar) ( Tony Avelar )