In today's Apple conference, Tim Cook revealed a number Apple achieved two weeks ago, Apple iPad is sold 100 million units in past 2.5 years. Moreover, the iPad brings network traffic of 91% among all network traffic in tablet PC market.In 2.5 years, Apple's iPad series have 3 members: the iPad, iPad 2 and the New iPad. Cook said the iPad's mission is to make things originally complex and confusing simpler so that even the the general children or the elderly can complete. Indeed, the iPad is appearing more and more frequently in study, life and work. According to Cook, iPad has a significant i...