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A timeline of United States inventions (1890–1945) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States. inventions from other historical time periods, see Timeline of United States inventions (before 1890), Timeline of United States inventions (1946–1991), and Timeline of United States inventions (after 1991).The concept of automated data processing had been born.In 1890, Herman Hollerith invented the mechanical tabulating machine, a design used during the 1890 Census which stored and processed demographic and statistical information on punched cards.The computer with display, or head unit, usually is attached to the handlebar for easy viewing.
1895 Cyclocomputer A cyclocomputer or cyclometer is a device mounted on a bicycle that calculates and displays trip information, similar to the instruments in the dashboard of a car.
Agricultural implements may be towed behind or mounted on the tractor, and the tractor may also provide a source of power if the implement is mechanized.