NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.

Blaise Pascal was a mathematician, a scientist, a philosopher, a Christian writer and the son of a tax collector in 17th century France. The family business involved a lot of tedious arithmetic, so ...

One model of the world's first calculator is set for auction By Ailsa Chang, Linah Mohammad, Patrick Jarenwattananon Published September 24, 2025 at 3:21 PM CDT ...