Functionally oriented design of this kind has always been strongly influenced by technological development, and will continue to be so in the future. The Braun pocket radios that we designed at the end of the 1950s would not have been possible without the new transistor technology at the time. Transistors were not only far smaller than valves, they also required much less power. That meant that for the first time it was possible to make a radio receiver that you could literally put in your pocket.