Herman Hollerith in 1888
February 29, 1860|
Buffalo, New York
|Died||November 17, 1929
|Resting place||Oak Hill Cemetery|
|Education||City College of New York (1875)
Columbia University School of Mines (1879)
|Occupation||Statistician, inventor, businessman|
|Known for||mechanical tabulation of punched card data|
|Spouse(s)||Lucia Beverley Talcott (1865–1944) (m. 1890–1929)|
|Awards||Elliott Cresson Medal (1890), World's Columbian Exposition, Bronze Medal (1892), National Inventors Hall of Fame (1990), Medaille d'Or, Exposition Universelle de 1889|
Herman Hollerith (February 29, 1860 – November 17, 1929) was an American statistician and inventor who developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data. He was the founder of one of the companies that later merged to become IBM. Hollerith is widely regarded as the father of modern automatic computation.
Personal life 
|This section does not cite any references or sources. (January 2013)|
Herman Hollerith was born the son of German immigrant Prof. Georg Hollerith from Großfischlingen (near Neustadt an der Weinstraße) in Buffalo, New York, where he spent his early childhood. He entered the City College of New York in 1875 and graduated from the Columbia University School of Mines with an "Engineer of Mines" degree in 1879, at age 19. In 1880 he listed himself as a mining engineer while living in Manhattan, and completed his Ph.D. in 1890 at Columbia University. In 1882 Hollerith joined the Massachusetts Institute of Technology where he taught mechanical engineering and conducted his first experiments with punched cards. He eventually moved to Washington, D.C., living in Georgetown, with a home on 29th Street and a factory for manufacturing his tabulating machines at 31st Street and the C&O Canal, where today there is a commemorative plaque installed by IBM. He died in Washington D.C. of a heart attack.
Electrical tabulation of data 
At the urging of John Shaw Billings, Hollerith developed a mechanism using electrical connections to trigger a counter, recording information. A key idea was that data could be coded numerically. Hollerith determined that if numbers could be punched in specified locations on a card, in the now-familiar rows and columns, then the cards could be counted or sorted mechanically and the data recorded. A description of this system, An Electric Tabulating System (1889), was submitted by Hollerith to Columbia University as his doctoral thesis, and is reprinted in Randell's book. On January 8, 1889, Hollerith was issued U.S. Patent 395,782, claim 2 of which reads:
The herein-described method of compiling statistics, which consists in recording separate statistical items pertaining to the individual by holes or combinations of holes punched in sheets of electrically non-conducting material, and bearing a specific relation to each other and to a standard, and then counting or tallying such statistical items separately or in combination by means of mechanical counters operated by electro-magnets the circuits through which are controlled by the perforated sheets, substantially as and for the purpose set forth.
Inventions and businesses 
Hollerith had left teaching and begun working for the United States Census Office in the year he filed his first patent application. Titled "Art of Compiling Statistics", it was filed on September 23, 1884; U.S. Patent 395,782 was granted on January 8, 1889. Patents 395,781 395,782 and 395,783 were published in Scientific American on January 18, 1889.
Hollerith built machines under contract for the Census Office, which used them to tabulate the 1890 census in only one year. The previous 1880 census had taken eight years. In 1896 Hollerith started his own business when he founded the Tabulating Machine Company. Many major census bureaus around the world leased his equipment and purchased his cards, as did major insurance companies. Hollerith's machines were used for censuses in Russia, Austria, Canada, France, Norway, Puerto Rico, Cuba, and the Philippines, and again in the 1900 census To make his system work, he invented the first automatic card-feed mechanism and the first key punch (that is, a punch operated by a keyboard); a skilled operator could punch 200–300 cards per hour. He also invented a tabulator. The 1890 Tabulator was hardwired to operate only on 1890 Census cards. A plugboard control panel in his 1906 Type I Tabulator allowed it to do different jobs without being rebuilt (the first step towards programming). These inventions were among the foundations of the modern information processing industry and Hollerith's designs dominated the computing landscape for almost 100 years.
In 1911 four corporations, including Hollerith's firm, merged to form the Computing Tabulating Recording Company (CTR). Under the presidency of Thomas J. Watson, it was renamed International Business Machines Corporation (IBM) in 1924.
During World War II, the Nazi regime recorded national census data onto Hollerith punch cards. The SS used the Hollerith machines to monitor the large numbers of prisoners shipped in and out of concentration camps. The machines were manufactured by DEHOMAG-Deutsche Hollerith Maschinen Gesellschaft or German Hollerith Machine Company, a subsidiary of IBM since 1922.
See also 
- Hollerith constants, also sometimes called Hollerith strings, were an early type of string constant declaration (in computer programming), named after Herman Hollerith.
- O'Connor, J.J.; Robertson, E.F. "Herman Hollerith". The MacTutor History of Mathematics Archive. School of Mathematics and Statistics, University of St Andrews, Scotland. Retrieved 5 March 2013.
- Lydenberg, Harry Miller (1924). John Shaw Billings: Creator of the National Medical Library and its Catalogue, First Director of the New York Public Library. American Library Association. p. 32.
- Randell (ed.), Brian (1982). The Origins of Digital Computers, Selected Papers (3rd ed.). Springer-Verlag. ISBN 0-jhh87-11319-3 Check
- US patent 395782, Herman Hollerith, "Art of compiling statistics", issued 1889-01-08
- The Invention and Development of the Hollerith Punched Card
- Publication of Hollerith patents
- Hollerith's Electric Sorting and Tabulating Machine, ca. 1895 from the American Memory archives of the Library of Congress
- Da Cruz, Frank. "Herman Hollerith". Columbia University Computing History. Columbia University. Retrieved 5 March 2013.
- "IBM Archives: Frequently Asked Questions" (PDF). Some accounts of the merger forming CTR state that three corporations were merged. This reference notes that only three of the four merged corporations are represented in the CTR name. That may be the reason for the differing accounts.
- "Facsimile of Hollerith punch card used in a 1933 Berlin population and vocational census". Photo Archives. United States Holocaust Memorial Museum. Retrieved 6 March 2013.
Further reading 
- Austrian, G.D. (1982). Herman Hollerith: The Forgotten Giant of Information Processing. Columbia. ISBN 0-231-05146-8.
- Heide, Lars (2009). Punched-Card Systems and the Early Information Explosion, 1880-1945. Johns Hopkins. ISBN 0-8018-9143-4.
- Essinger, James (2004). Jacquard's Web: How a Hand-Loom Led to the Birth of the Information Age. Oxford: Oxford University Press.
- Hollerith, Herman (1890). In connection with the electric tabulation system which has been adopted by U.S. government for the work of the census bureau (Ph.D. dissertation). Columbia University School of Mines.
- Hollerith, H. (April 1889). "An Electric Tabulating System". The Quarterly, Columbia University School of Mines X (16): 238–255.
- Hollerith, Herman (December 1894). "The Electric Tabulating Machine". Journal of the Royal Statistical Society (Journal of the Royal Statistical Society, Vol. 57, No. 4) 57 (4): 678–682. doi:10.2307/2979610. JSTOR 2979610.
- Works by or about Herman Hollerith in libraries (WorldCat catalog)
- Hollerith's patents from 1889: US 395781 US 395782 US 395783
- Hollerith's 1890 Census Tabulator
- IBM Archives: Herman Hollerith
- IBM Archives: Tabulating Machine Co. plant
- Early Office Museum: Punched Card Tabulating Machines
- Hollerith page at the National Hall of Fame
- Map to his gravesite
- Columbia University Computing History: Herman Hollerith
- O'Connor, John J.; Robertson, Edmund F., "Herman Hollerith", MacTutor History of Mathematics archive, University of St Andrews.
- The Norwegian Historical Data Center: Census 1900 Includes a description of the use of Hollerith machines ("complicated, American enumeration machines"), together with illustrations.
- Fleishman, Sandra (March 5, 2005). "$8.5 Million And Counting". Washington Post. Retrieved May 4, 2010. – Hollerith's house
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