5th episode of Stephen Fry on the Phone

http://www.bbc.co.uk/iplayer/episode/b017clwx/Stephen_Fry_on_the_Phone_The_Chips_inside_Smartphones/

All mobile phones rely on hyper-intelligent silicon chips to run them. And the astonishing thing is: 85% of the silicon chips inside all mobile phones are designed by one Cambridge-based company, ARM. Stephen Fry talks to the pioneers who designed these chips. They needed some micro-processors to build a better home computer, but didn't like what they saw and decided to make their own. Strapped for cash, they designed chips that were small, cheap and exceptionally low power and, quite by chance, ideally suited to the next generation of pocket-sized mobile phones. Not to mention today's power-hungry smartphones.