The comptometer, patented in 1887 by Dorr E. Two hundred years later, this technology led to Thomas de Colmar’s four-function arithmometer, a counting machine with levers and knobs. In 1642, Blaise Pascal created the first mechanical calculator, a device that could perform all four arithmetic operations without human intervention. The arithmometer and comptometerĮventually, calculators began to look more like how we see them today.
This device eventually evolved to handle advanced trigonometry, logarithms, exponentials and square roots. The slide rule uses logarithmic scales to do rapid multiplication and division. John Napier developed logarithms in the 17th century, and his discoveries enabled Edward Gunter and others to create the slide rule. Because abacus beads resemble beans, the abacus may be why accountants are sometimes referred to as “bean counters.” The slide rule Every row going up an abacus represents a different decimal place. An abacus consists of several rods with 10 sliding beads on each rod and can add, subtract, multiply and divide.
The first calculator, the abacus, was used by the Sumerians and Egyptians and dates to around 2000 B.C. A brief history of the scientific calculator The abacus The ability to solve polynomials and simultaneous equations has long made the scientific calculator an indispensable tool for students and professionals in science, engineering and mathematics. Scientific calculators can perform all the functions of a basic calculator as well as execute far more complex mathematical functions and equations. Please look at the time stamp on the story to see when it was last updated. This is an archived article and the information in the article may be outdated.
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