The Remington Rand 409, a punched card calculator which was programmed with a plugboard, was designed in 1949.[citation needed] It was sold in two models: the UNIVAC 60 (1952) and the UNIVAC 120 (1953). The model number referred to the number of decimal digits it could read from each punched card.[1]
A UNIVAC 120 served as the first computer in Boise, Idaho
The machine was designed in "The Barn", at 33 Highland Ave. in Rowayton, Connecticut, a building that currently houses the Rowayton Public Library and Community Center.
These machines were discontinued when the UNIVAC 1004 was introduced in 1962. About 1000 total had been produced by 1961.
Numbers were fixed-point and of variable length (one to ten digits). Arithmetic was done in floating point, but all results were converted to fixed point when stored in memory.
Digits are represented in bi-quinary coded decimal. Each digit of memory storage contained five tubes. Four of these represented the digits 1, 3, 5, and 7, while the fifth tube represented 9 if activated alone but added 1 to the value if activated together with another tube.
^According to Electronic Brains: Stories from the dawn of the computer age, by Mike Hally, 2005, ISBN978-0-309-09630-0, p. 69, the Univac 60 could use 60 columns of data from a punched card, whereas the Univac 120 could use 120 columns.
Electronic Brains: Stories from the dawn of the computer age, chapter 3 (pp. 53–73), Mike Hally, 2005, ISBN 978-0-309-09630-0.
External linksedit
Rowayton Public Library Website
Universal Automatic Computer Model 60 A Third Survey of Domestic Electronic Digital Computing Systems Report No. 1115, March 1961 by Martin H. Weik
Universal Autometic Computer Model 120 A Third Survey of Domestic Electronic Digital Computing Systems Report No. 1115, March 1961 by Martin H. Weik
Service and Programming documentation at bitsavers.org
December 20, 2023
remington, rand, punched, card, calculator, which, programmed, with, plugboard, designed, 1949, citation, needed, sold, models, univac, 1952, univac, 1953, model, number, referred, number, decimal, digits, could, read, from, each, punched, card, univac, 60manu. The Remington Rand 409 a punched card calculator which was programmed with a plugboard was designed in 1949 citation needed It was sold in two models the UNIVAC 60 1952 and the UNIVAC 120 1953 The model number referred to the number of decimal digits it could read from each punched card 1 UNIVAC 60ManufacturerRemington RandRelease date1952 71 years ago 1952 SuccessorUNIVAC 120UNIVAC 120UNIVAC 120ManufacturerRemington RandRelease date1953 70 years ago 1953 Mass3 230 lbPredecessorUNIVAC 60SuccessorUNIVAC 1004A UNIVAC 120 served as the first computer in Boise IdahoThe machine was designed in The Barn at 33 Highland Ave in Rowayton Connecticut a building that currently houses the Rowayton Public Library and Community Center These machines were discontinued when the UNIVAC 1004 was introduced in 1962 About 1000 total had been produced by 1961 Contents 1 Architecture 2 Hardware 3 See also 4 Notes 5 Further reading 6 External linksArchitecture editNumbers were fixed point and of variable length one to ten digits Arithmetic was done in floating point but all results were converted to fixed point when stored in memory Digits are represented in bi quinary coded decimal Each digit of memory storage contained five tubes Four of these represented the digits 1 3 5 and 7 while the fifth tube represented 9 if activated alone but added 1 to the value if activated together with another tube Digit 1 3 5 7 901 2 3 4 5 6 7 8 9 Hardware editRR 409 model 60 model 120 2 Number of tubes 800Decimal digits of storage 438Weight 3 230 lbSee also editList of UNIVAC products History of computing hardware List of vacuum tube computersNotes edit According to Electronic Brains Stories from the dawn of the computer age by Mike Hally 2005 ISBN 978 0 309 09630 0 p 69 the Univac 60 could use 60 columns of data from a punched card whereas the Univac 120 could use 120 columns model 120 see plaque in imageFurther reading editElectronic Brains Stories from the dawn of the computer age chapter 3 pp 53 73 Mike Hally 2005 ISBN 978 0 309 09630 0 External links editRowayton Connecticut Birthplace of the World s First Business Computer Rowayton Public Library Website Universal Automatic Computer Model 60 A Third Survey of Domestic Electronic Digital Computing Systems Report No 1115 March 1961 by Martin H Weik Universal Autometic Computer Model 120 A Third Survey of Domestic Electronic Digital Computing Systems Report No 1115 March 1961 by Martin H Weik Service and Programming documentation at bitsavers org Retrieved from https en wikipedia org w index php title Remington Rand 409 amp oldid 1143322802, wikipedia, wiki, book, books, library,
