The first mass-produced mechanical calculator was the ____.
A) Pascaline
B) Leibniz
C) de Colmar's Arithmometer
D) IBM Selectrix

Question

Quizplus · Accepted Answer

The Arithmometer, invented by Charles Xavier Thomas de Colmar in 1820, was the first mass-produced mechanical calculator. The Pascaline and Leibniz calculator were both earlier prototypes of mechanical calculators, but were not mass-produced. The IBM Selectrix is a typewriter, not a mechanical calculator.

The First Mass-Produced Mechanical Calculator Was the ____