They manufactured machinery for sale and lease, ranging from commercial scales and industrial time recorders, meat and cheese slicers, to tabulators and punched cards.
Personal life[ edit ] Herman Hollerith was born the son of German immigrant Prof. D based on his development of the tabulating system.
He died in Washington D.
Unit record equipment At the urging of John Shaw BillingsHollerith developed a mechanism using electrical connections to increment a counter, recording information. For example, if a specific hole location indicates marital status, then a hole there can indicate married while not having a hole indicates single.
Hollerith determined that data in specified locations on a card, the now-familiar rows and columns, could be counted or sorted electromechanically. A description of this system, An Electric Tabulating Systemwas submitted by Hollerith to Columbia University as his doctoral thesis, and is reprinted in Randell's book.
Patent ,  claim 2 of which reads: Photo dated December 31, of census worker with Hollerith pantograph punch.
The keyboard layout is for the US Census population card. The "sorting box" was an adjunct to, and controlled by, the tabulator. The "sorter", an independent machine, was a later development.
Patentwas granted on January 8, The net effect of the many changes from the census: The Tabulator was hardwired to operate on Census cards. A control panel in his Type I Tabulator simplified rewiring for different jobs.
The s removable control panel supported prewiring and near instant job changing.This index mentions most of the computer pioneers and their inventions, or other important people in computers or computing industry.
The Columbia University Statistical Laboratory (location unknown) includes Hollerith tabulating, punching, and sorting machines, Burroughs adding machines, Brunsviga and Millionaire calculators (the latter was the first device to perform direct multiplication), plus reference works such as math and statistical tables.
Prof. Robert E.
Chaddock (Statistics Dept) was in charge. Watch Buceta loca de tesao video caseiro - free porn video on MecVideos. 🔥Citing and more! Add citations directly into your paper, Check for unintentional plagiarism and check for writing mistakes.
In the s, technologies emerged that would ultimately form the core of International Business Machines (IBM). Julius E. Pitrap patented the computing scale in ; Alexander Dey invented the dial recorder (); Herman Hollerith () patented the Electric Tabulating Machine; and Willard Bundy invented a time clock to record a worker's arrival and departure time on a paper tape in Mankind barely noticed when the concept of massively organized information quietly emerged to become a means of social control, a weapon of war, and a roadmap for group destruction.