Translations for „comptometer“ in the English » Arabic Dictionary

comptometer N

comptometer

آلة حاسبة

Monolingual examples (not verified by PONS Editors)

English

The comptometer, introduced in 1887, was the first machine to use a keyboard which consisted of columns of nine keys (from 1 to 9) for each digit.

en.wikipedia.org

Earlier key driven adding machines, like the comptometer, featured eight or more columns of nine keys, which made them cumbersome and costly and their operators prone to mistakes.

en.wikipedia.org