File:1890 Census Hollerith Electrical Counting Machines Sci Amer.jpg

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1890_Census_Hollerith_Electrical_Counting_Machines_Sci_Amer.jpg ‎(622 × 480 pixels, file size: 99 KB, MIME type: image/jpeg)

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current21:17, 15 May 2012Thumbnail for version as of 21:17, 15 May 2012622 × 480 (99 KB)commons>Infrogmation{{Information |Description=The Hollerith electric tabulating machine being used for the 1890 U.S. A. Census. |Source= Illustration in "Scientific American" magazine, Aug. 30, 1890. Via reproduction at [http://www.officemuseum.com/data_processing_machi...

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