Herman Hollerith Tabulating System, 1904
Bildnummer 12649888
| 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. No photographer credited, dated 1904. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / Science Source |
| Bildgröße: | 3346 px × 4050 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: |
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