Post to Wall
An amazing old calculator known as the Curta.
This video will not play. You currently do not have Adobe Flash installed on this computer. Please click here to download it (it's free!)
Share on Facebook
Alex Bellos of the Numberphiles made this video to explore the history of the calculator. In it, we get to see a mechanical pocket calculator called the Curta Calculator, which was developed in the 1940's.