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Hollerith constants, named in honor of Herman Hollerith, were used in early FORTRAN programs to allow manipulation of character data. Early FORTRAN had no CHARACTER data type , only numeric types. In order to perform character manipulation, characters needed to be placed into numeric variables using Hollerith constants.
Herman Hollerith (February 29, 1860 – November 17, 1929) was a German-American statistician, inventor, and businessman who developed an electromechanical tabulating machine for punched cards to assist in summarizing information and, later, in accounting.
Hollerith started his own business as The Hollerith Electric Tabulating System, specializing in punched card data processing equipment. [10] In 1896 he incorporated the Tabulating Machine Company. In that year he introduced the Hollerith Integrating Tabulator, which could add numbers coded on punched cards, not just count the number of holes.
The Hollerith Electronic Computer (HEC) was produced by the British Tabulating Machine Company (BTM) and was based on a design by Professor Andrew Booth of Birkbeck College, London. [1] It was Britain's first mass-produced business computer.
Replica of Hollerith tabulating machine with sorting box, circa 1890. The "sorting box" was an adjunct to, and controlled by, the tabulator. The "sorter", an independent machine, was a later development. [15] 1884: Herman Hollerith files a patent application titled "Art of Compiling Statistics"; granted U.S. patent 395,782 on January 8, 1889.
Toggle the table of contents. List of British computers. ... Download QR code; Print/export ... Hollerith Electronic Computer; ICS Multum; ICT.
Although Hollerith had numerous patents for his tabulators, Powers managed to avoid infringement, by using mechanical sensors on the punch readers, instead of electrical sensors. The new machine was faster, cheaper, more accurate, less error-prone, and less wasteful than Hollerith's or Pidgin's, while maintaining compatibility with Hollerith's ...
Dehomag was a German subsidiary of IBM and later a standalone company with a monopoly in the German market before and during World War II. [1] The word was a syllabic abbreviation for Deutsche Hollerith-Maschinen GmbH (English: German Hollerith Machines LLC).