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The term unit record equipment also refers to peripheral equipment attached to computers that reads or writes unit records, e.g., card readers, card punches, printers, MICR readers. IBM was the largest supplier of unit record equipment and this article largely reflects IBM practice and terminology.
ISBN 978-1-894183-86-4. Archived from the original (PDF) on 2016-03-24. An accessible book of recollections (sometimes with errors), with photographs and descriptions of many unit record machines. The chapter It all adds Up describes IBM tabulators and accounting machines. Kistermann, F.W. (Summer 1995).
The British Tabulating Machine Company (BTM) was a firm which manufactured and sold Hollerith unit record equipment and other data-processing equipment. During World War II, BTM constructed some 200 "bombes", machines used at Bletchley Park to break the German Enigma machine ciphers.
[1] [2] [3] Hollerith founded a company that was amalgamated in 1911 with several other companies to form the Computing-Tabulating-Recording Company. In 1924, the company was renamed "International Business Machines" and became one of the largest and most successful companies of the 20th century. Hollerith is regarded as one of the seminal ...
Friden manufactured equipment which could connect their calculators to Flexowriters, printing output and performing unit record tasks such as form letters for bills, and eventually manufactured their own computers to further enhance these capabilities. These variants were sold as the Friden Computyper. Computypers were electromechanical; they ...
IBM unit record equipment (2 C, 28 P) P. Punched card (2 C, 16 P) U. UNIVAC unit record equipment (1 C, 9 P) Pages in category "Unit record equipment"
The Computing-Tabulating-Recording Company (CTR) [1] was a holding company of manufacturers of record-keeping and measuring systems; it was subsequently known as IBM.. In 1911, the financier and noted trust organizer Charles R. Flint, called the "Father of Trusts", amalgamated (via stock acquisition) four companies: Bundy Manufacturing Company, International Time Recording Company, the ...
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