The tabulating machine was an electrical device designed to assist in summarizing information. Invented by Herman Hollerith, the machine was developed to help process data for the 1890 Census. The cards were coded for age, state of residence, gender, and other information; clerks punched holes in the cards to enter information from tabulator had 40 counters, each with a dial divided into 100 divisions, with two indicator hands; one which stepped one unit with each counting pulse, the other which advanced one unit every time the other dial made a complete revolution. This arran
The tabulating machine was an electrical device designed to assist in summarizing information. Invented by Herman Hollerith, the machine was developed to help process data for the 1890 Census. The cards were coded for age, state of residence, gender, and other information; clerks punched holes in the cards to enter information from tabulator had 40 counters, each with a dial divided into 100 divisions, with two indicator hands; one which stepped one unit with each counting pulse, the other which advanced one unit every time the other dial made a complete revolution. This arrangement allowed a count up to 10,000.
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Keywords: 1890, 19th, america, art, bw, census, century, collection, computing, data, device, electric, electrical, engraving, herman, history, hollerith, illustration, machine, processor, science, tabulating, tabulation, tabulator, technology
