My region: Россия
My cart руб.

The Adding Device of Kummer

Published 30.12.2011 Presenter Anton Pankratov

The Adding Device of Kummer
One of the first compact arithmetical devices to become widely spread was the adding device or computer created in 1846 by Kummer, a music teacher from St. Petersburg. The adding device had been manufactured until the second half of the twentieth century.
The peculiarity of this device lies in its small size and convenience ...