Jan 082022
Herman Hollerith's 1890 Tabulating Machine

Herman Hollerith’s 1890 Tabulating Machine

Herman Hollerith patented his tabulating machine in 1889. This machine, instrumental in calculating census data, was a precursor to today’s computers. Children can view his patent at: http://www.google.com/patents/US395782. Idea: Children could make a timeline of inventions important to the development of the computer.

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