calculator
Usually hand-held, pocket-sized electronic device for performing numerical calculations, organizing data, graphing functions, and/or performing symbolic manipulations.

Simpler calculators can perform basic operations including addition, subtraction, multiplication, and division. More specialized calculators perform operations with squares, roots, certain trigonometric and statistical functions. They store and sort data lists or programs, and create an assortment of graphs.


Related Term: slide rule


 
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