Stephen Fry meets the brains behind the mobile phone.
Today, 85% of the silicon chips inside all mobile phones are designed by one Cambridge-based company, ARM. Two computer engineers needed some micro-processors 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.
Produced by Anna Buckley.