The Calculators ClipArt gallery provides 13 of comptometers and other early mechanical calculating devices.

"A tray strewn with dust or sand, used in ancient times for calculating. A contrivance for calculating,…

"Abacus is a Latin term applied to an apparatus used by the Chinese for facilitating arithmetical operations,…

An instrument for performing arithmetical calculations by means of sliding balls or counters.

Used in businesses and bookkeeping, the adding machine was a device used for calculations. "One of the…

An aluminum set of disks that correctly finds the time needed to develop photos in solution

This machine is used for multiplication, and division purposes. Multiplication is the mathematical operation…

A typewriter is a mechanical or electromechanical device with a set of "keys" that, when pressed, cause…