Exponential change becomes the driving force behind the digital economy. A giant step was taken when visionary J.C.R. Licklider brought the Internet into existence by standardizing the ability of computers to talk to each other. This monumental step forward is followed shortly after by the creation of email. The invention of computer games changes the world of entertainment. At the same time, Bill Gates and Paul Allen do the unthinkable when their software introduces the personal computer to the world. Part of the "From Computers to Artificial Intelligence: A History" series.