Search results
Herman Hollerith (February 29, 1860 – November 17, 1929) was an American statistician, inventor, and businessman who developed an electromechanical tabulating machine for punched cards to assist in summarizing information and, later, in accounting.
Mar 27, 2019 · Learn how Herman Hollerith invented and used punch cards to process census data in 1890. Find out how punch cards were used in data processing and computing until the late 1970s.
Herman Hollerith, American inventor of a tabulating machine that was an important precursor of the electronic computer. Hollerith’s machine recorded statistics by electrically reading and sorting punched cards that had been numerically encoded by perforation position.
Learn how Hollerith invented the punch card tabulating machine in 1888, which revolutionized the census and information technology. The device used mercury contacts, dials and sorters to count and sort data from cards with holes.
Learn how Herman Hollerith invented the punched card for the 1890 US Census and how IBM developed and popularized it as a data storage device. Explore the evolution, uses and legacy of the punched card and its cultural icon status.
Invented by Herman Hollerith, the machine was developed to help process data for the 1890 U.S. Census. Later models were widely used for business applications such as accounting and inventory control. It spawned a class of machines, known as unit record equipment, and the data processing industry.
Learn how Hollerith invented the electric-powered counting machine that used punched cards to automate data processing for the US Census Office. Discover how his invention led to the development of computers and the binary system.
