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Today in History: Herman Hollerith patents revolutionary tabulating machine

1/8/2026

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Summary

Story summary

On January 8, 1884, Herman Hollerith received a patent for his electromechanical tabulating machine, designed to process data from punched cards. This invention revolutionized data summarization, initially aiding the 1890 U.S. Census and later transforming business practices in accounting and inventory control, laying the groundwork for modern data processing systems.

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Story summary

On January 8, 1884, Herman Hollerith received a patent for his electromechanical tabulating machine, designed to process data from punched cards. This invention revolutionized data summarization, initially aiding the 1890 U.S. Census and later transforming business practices in accounting and inventory control, laying the groundwork for modern data processing systems.