6. 4.6B in perspective mobile phone subscriptions 4.6 B 69% of world populaton 6.7B http://www.itu.int/newsroom/press_releases/2009/39.html 4.6 Billion
7. Computers: Eniac -> large -> desktop -> lap top -> phone As computers shink, they get faster…. We cn not only do more of, we can do different things