120 year old fully functioning calculator. Able to add, subtract, multiply and divide up in the billions

Cliff is back with an amazing device - The Millionaire. More videos with Cliff Stoll: Calculator unboxings: NUMBERPHILE Website: Numberphile on Facebook: Numberphile tweets: Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): Videos by Brady Haran Support us on Patreon: