Invention of Tabulator
Patents an electrical computer for processing data
Historical biography archive · Updated 2026-11-03
Herman Hollerith Biography and Timeline
Follow Herman Hollerith through 4 dated historical records for United States of America.
Herman Hollerith, historical timeline
A chronological timeline drawn from matching World History Database records.
4Distinct records
1 of 1Page
1889–1890Years on this page
1889
Hollerith Electrical Tabulator Patent Granted
Herman Hollerith patented electromechanical data handling machinery designed to accelerate statistical tabulation. The project changed the techniques available to later investigators.
1890
Invention of Tabulator
Holleriths tabulating machine company becomes international business machines - IBM. 1st device for data processing, used in the USA 1890 census
Punched Card Tabulation Supports Census
Hollerith's system substantially improved the processing of United States census information. Its practical implications extended beyond the initial application.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.