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Comptometer
01
comptómetro, calculadora mecánica
a mechanical calculator developed in the late 19th century, featuring multiple rows of keys corresponding to digits
Ejemplos
Before electronic calculators became widespread, operators were trained to use comptometers for accounting tasks.
Antes de que las calculadoras electrónicas se generalizaran, los operadores eran entrenados para usar comptómetros en tareas contables.



























