Tuesday, April 1, 2008

Electric Adding Machine

In a certain way, this started the whole computer thing going. An operator would handle about 50-80 cards per minute (say 1 per second). Hollerith electric tabulating system, including tabulating machine, card reader, pantograph punching machine, and sorting machine, 1890, National Museum of American History, Smithsonian Institution, Washington, DC.

No comments: