Earlier this year, [Dan Maloney] went inside mechanical calculators. Being the practical sort, [Dan] jumped right into the Pascaline invented by Blaise Pascal. It couldn’t multiply or divide. He then ...

Christel Hamann’s difference engine was a type of mechanical calculator made in the 1900s. It was automatic and could help people calculate and arrange polynomial functions used in science, ...

Scientific calculators can perform all the functions of a basic calculator as well as execute far more complex mathematical functions and equations. The ability to solve polynomials and simultaneous ...