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hollerith |
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| navigate by keyword : calculation census computer counting data dials electrical electromechanical engineering historical hollerith invention processing tabulator technology tool |
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| Herman Hollerith`s tabulator consisted of electrically operated components that captured and processed census data by `reading` holes on paper punch cards. The 1890 Hollerith tabulators consisted of 40 data-recording dials. Each dial represented a different data item collected during the census. The electrical impulses received as the reader`s pins passed through the card into the mercury advanced the hands on the dials corresponding to the data contained on the punch card. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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