Herman Holerit was born on February 29, 1860 and died on November 17, 1929. In 1875, he enrolled in the City College in New York while graduating from the Columbia University, Mining Department, and received the title Mining Engineer. In 1890 he received his Ph.D. in Columbia University.
After graduation, he was employed at the US Census Bureau as a special agent for the collection and analysis of data on the use of steam and water power in the metallurgical industry. Later he moved to Massachusetts Institute of Technology as an instructor.
His son-in-law worked in the Jacquard robbery firm on silk weaving. Through him, he introduced the system of using bumps in the cards for programming the weaving scheme. Inspiration was also found in the excited subscription cards for the train (information on the passenger-color of hair, height, etc., drilled the conduit along the edge). So he came to the conclusion that every agent for the inventory can do the same, and that the drilled cards are sorted like the Zakarov loom. In the present invention, it is important that the holes are loaded electronically and not mechanically, and the card contains all the information about the individuals.
Electronic spreadsheet statistics
At the insistence of John Shaw Bilings, Herman invented a mechanism for reading the presence or absence of murmurs in the card. It was achieved by using spray-tipped tops, and they would go through kissing, thus achieving an electrical connection that triggers the counter to record each data . The idea was that all personal data can be assigned a numeric code. Holerit concluded that if the numbers are pierced in certain columns on the cards, then the cards can be sorted mechanically and thus the appropriate columns can be assembled. One of the advantages of this system was the ability to sort the cards in a logical order, however keeping a large number of these cards was a problem. In order to solve this problem, the cards were made in the size of one dollar and expounded their idea in Pat. 395, 782 of January 8, 1889.
Tablets production company
He signed a contract with the American Biro for the population census and constructed machines that successfully completed a tabulation of the population census from 1890 for two and a half years. In 1896 he founded the company for the production of tables. Most major census bureaus, as well as insurance companies, used its equipment and purchased its cards. He also invented the first mechanism for automatic card insertion. In 1911 he joined his company with two more and founded the Computing Tabulating Recording Corporation. Under the leadership of Tomas Dž. Watson, in 1924, this company changed its name to IBM.