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Hollerith Tabulating System, 1890

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 U.S. Census. The cards were coded for age, state of residence, gender, and other information; clerks punched holes in the cards to enter information from returns.The 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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Titre:
Hollerith Tabulating System, 1890
Légende: Voir la traduction automatique
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 U.S. Census. The cards were coded for age, state of residence, gender, and other information; clerks punched holes in the cards to enter information from returns.The 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.
Crédit:
Album / NLM/Science Source
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Modèle: Non - Propriété: Non
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Taille de l'image:
3600 x 2772 px | 28.6 MB
Taille d'impression:
30.5 x 23.5 cm | 12.0 x 9.2 in (300 dpi)
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