NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.
The last Pascaline arithmetic machine in private hands will be sold at Christie’s Paris on November 19 where it is expected to command a handsome sum between €2 million and €3 million ($2.4 million–$3 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback