Calculators

Uses

Calculators are devices that allow the user to perform mathematical operations. Most schools use basic calculators which allow the user to perform tasks such as addition, multiplication, subtraction, and division. More advanced calculators may include features such is related to trigonometry, logarithms, exponents, multi-base calculations, and other mathematical operations.

History

The first "calculator" was invented in 1642, it performed calculations through a clockwork-type of mechanism. The first electronic calculator were invented in the early 1960s, while editions made to fit in a pocket did not get invented until around 1970s with the Intel 4004.

Math Competitions

For most high-school mathematical competitions, any calculator is allowed, so long as the calculator is not accompanied by a QWERTY keyboard. This is to prevent phones or other devices that are connected to the Internet from being used during the competition. However, middle-school and elementary-school math competitions generally ban calculators as many of their problems are based on being able to perform calculations accurately.

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