Adding machine

An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. Consequently, the earliest adding machines were often designed to read in particular currencies. Adding machines were ubiquitous office equipment in developed countries for most of the twentieth century.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY 4.0

ACCOUNTANT LOG

Accounting made clear — tax, bookkeeping, and the calculators behind smarter money decisions.

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