The casings may be slightly worn and the manuals a little dog-eared but a handful of BBC Micros were fired up at the Science Museum on Thursday as part of a Computer Conservation Society event to mark the legacy of the BBC Micro, know fondly as the Beeb.

Four of the architects of the Beeb - Hermann Hauser, Steve Furber and Sophie Wilson who worked at Acorn and former BBC executive producer John Radcliffe - explain in their own words how the BBC Micro came to be created and the impact it had.