# Calculator

## The First Calculators, Early Calculators, Difference Engine, Patents, Electronic Predecessor To Computer, Inside Calculators

The calculator is a computing machine. Its purpose is to do **mathematics**; basic calculators do the basic mathematical functions (**addition**, **subtraction**, **division**, and **multiplication**) while the more advanced ones, which are relatively new in the history of computing machines, do advanced calculations such as solving **polynomials**. The odometer, or mileage counter, in your car is a counting machine as is the calculator in your backpack and the computer on your desk. They may have different ability levels, but they all tally numbers.

## Additional topics

- Calculation and Computation - Premodern, Early Modern, Non-western, Late Modern Period, Contemporary Period, Bibliography
- Calculator - The First Calculators
- Calculator - Early Calculators
- Calculator - Difference Engine
- Calculator - Patents
- Calculator - Electronic Predecessor To Computer
- Calculator - Inside Calculators
- Calculator - Modern Advances
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