How was the calculator invented? How did it go from something the size of a table to something that could be carried in your pocket, the must-have gadget of the 1970’s and 80’s?
Tim Harford unpicks the history of the calculator with Keith Houston, author of Empire of the Sum: The Rise and Reign of the Pocket Calculator.
Presenter: Tim Harford
Producer: Debbie Richford
Production Co-ordinator: Brenda Brown
Series Producer: Tom Colls
Sound Mix: Hal Haines
Editor: Richard Vadon