FutureStarr

Old Time Calculator

## Old Time Calculator

Do you know how to do your multiplication table? Have you ever used an old-fashioned slide rule? Here's a calculator and a slide rule, both using the arc scaled incommensurate. For example, the multiplier of 5 divided by 1 is 5 / 1 = 5.

### Use

via GIPHY

Before the invention of modern calculators, people would calculate by using various counting devices. Early human beings may have used their fingers and toes for some problems. As the earliest civilizations grew, merchants may have used stones or seeds to help them with equations. The beads of the abacus eventually became vital to the trade of goods and services. Other devices used before calculators include the slide rule, Napier's bones, and early machines like Babbage's analytical engine. (Source:

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