Hollerith's Electromechanical Tabulator
The first of Kurzweil's Five Paradigms of Computing.
Herman Hollerith invented an electromechanical tabulating machine using punch cards to process the 1890 US Census. It was the first time an electrical machine was used to process data on a massive scale, completing a task that previously took nearly a decade in just two years.
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- Ray Kurzweil places this machine at the absolute starting point of his famous "Law of Accelerating Returns" graph, marking the beginning of the "Electromechanical" paradigm.
- Hollerith's company eventually merged with several others in 1911 to form the Computing-Tabulating-Recording Company (CTR), which was later renamed IBM.
- The punch card format he established was so ubiquitous that IBM punch cards remained the industry standard for data entry well into the 1970s.
Frequently Asked Questions
What was Hollerith's Electromechanical Tabulator?
Herman Hollerith invented an electromechanical tabulating machine using punch cards to process the 1890 US Census. It was the first time an electrical machine was used to process data on a massive scale, completing a task that previously took nearly a decade in just two years.
When did Hollerith's Electromechanical Tabulator happen?
Hollerith's Electromechanical Tabulator: 1890 CE.
Why does Hollerith's Electromechanical Tabulator matter?
The first of Kurzweil's Five Paradigms of Computing.
Sources & Further Reading
Cite This Page
AskHistoryAI. “Hollerith's Electromechanical Tabulator.” AskHistoryAI — Interactive Timeline of Everything. Updated 2026-09-11. https://askhistoryai.com/event/tech-hollerith/
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