Comptometer

La Nature (April 1896) source: Valery Monnier

1920

First calculating machine presented to Smithsonian. Washington, D.C., March 31, 1937. An old macaroni box filled with an arrangement of wheels, rubber bands, meat skewers and staple...

source: Library of Congress 1937 March 31.  Harris & Ewing, photographer

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last updated: 07-Nov-09