Felt Comptometer

Analytical Engine

Herman Hollerith By that standard, the history of computing can begin at the end of the 19th century, when American inventor Herman Hollerith invented the computer for the United States in 1890, a way of storing information encoded by punching holes in cards. Hollerith developed punched cards and a set of machines for sorting, retrieving, counting, and simply calculating punched cards. The device he developed combined complex mechanisms, electromagnets and motors to perform the action. And it doesn't require electricity. By World War II, circuits had grown in importance, not only as carriers of information, but also as a means of high-speed computational operations-a property that in theory did not require a real computer, but was crucial in practice. The inherent flexibility of Hollerith's machine system designed around punch cards has given it many applications outside the U.S. Census. Hollerith also founded a tabulating machine company to market his invention; Later, it merged with other companies to form the Computing Tabulation Records Company (C-T-R).

computer

An agency of the U.S. Department of Defense has launched a project to connect defense computers across the United States. The combination of computing and communication has unleashed a torrent of social change that we are now living in.

George Stibitz, a mathematician at Bell Telephone Laboratories, felt that the word pulse was not quite right. He comes up with another term that he thinks is more descriptive: digitizal in world war II. The word refers to a method of counting by fingers or numbers. Since then, it has become an adjective to describe the social, economic and political life of the 21st century.