adding machine

adding machineMechanical adding machine.

adding machine, a type of calculator (q.v.) used for performing simple arithmetical operations.

This article was most recently revised and updated by Amy Tikkanen.
Citation Information
Article Title: adding machine
Website Name: Encyclopaedia Britannica
Publisher: Encyclopaedia Britannica, Inc.
Date Published: 06 January 2020
Access Date: February 22, 2025