Upload

Loading...

Amazing Old Calculator (Curta) - Numberphile

471,777

Loading...

Loading...

Transcript

The interactive transcript could not be loaded.

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Oct 7, 2012

Alex's book: http://amzn.to/1l0yX46

The Curta is a pocket-sized, mechanical, digital calculator!!! It was invented by Curt Herzstark.

Shown here by Alex Bellos, author of Alex's Adventures in Numberland.

More about our contributors, including Alex, at http://www.numberphile.com/team/index...

Website: http://www.numberphile.com/
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
Videos by Brady Haran

A run-down of Brady's channels:
http://periodicvideos.blogspot.co.uk/...

Loading...

Advertisement
When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...