An Xbox 360 video presentation at the E3 Media and Business Summit in Los Angeles in 2008. Microsoft is scheduled to introduce its newest Xbox on Tuesday. Ric Francis/AP hide caption

itoggle caption Ric Francis/AP

Chris Yerga, engineering director for Android at Google Inc., speaks at the company's I/O Annual Developers Conference in San Francisco on Wednesday. David Paul Morris/Bloomberg via Getty Images hide caption

itoggle caption David Paul Morris/Bloomberg via Getty Images

YouTube is expected to announce a subscription service for special channels this week. Jeff Chiu/ASSOCIATED PRESS hide caption

itoggle caption Jeff Chiu/ASSOCIATED PRESS

Ester Gerston and Gloria Ruth Gordon, early programmers working on the ENIAC computer in 1946. U.S. Army hide caption

itoggle caption U.S. Army

Twitter co-founder Biz Stone is one of five celebrity directors taking part in a Canon-sponsored experiment called Project Imaginat10n. His short film, the inspiration for which was crowdsourced via the Internet and social media, focuses on familial loss and the process of grieving. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

BioShock Infinite revolves around an Aristotelian tragedy with tragic heroes, grounded in a floating city set in 1912. Courtesy of Irrational Games/2K Games hide caption

itoggle caption Courtesy of Irrational Games/2K Games

Egyptians use their mobile phones to record celebrations in Cairo's Tahrir Square, the epicenter of the popular revolt that drove Hosni Mubarak from power in 2011. Twitter was often used to record happenings during the Arab Spring. Mohammed Abed/AFP/Getty Images hide caption

itoggle caption Mohammed Abed/AFP/Getty Images

Strachwitz and Ry Cooder backstage at Arhoolie's 50th anniversary celebration. Mike Melnyk/Arhoolie Records hide caption

itoggle caption Mike Melnyk/Arhoolie Records