Model V
This article, Model V, has recently been created via the Articles for creation process. Please check to see if the reviewer has accidentally left this template after accepting the draft and take appropriate action as necessary.
Reviewer tools: Inform author |
Comment: This needs some work to get the references in shape (see WP:INCITE for guidance), but wow, this is a great topic. -- RoySmith (talk) 02:05, 7 September 2018 (UTC)

The Model V was among the early[2] electromechanical[3] general purpose computers,[4][5][6] designed by George Stibitz and built by Bell Telephone Laboratories, operational in 1946.
Only two machines were built: first one was installed at National Advisory Committee for Aeronautics, second (1947) at Ballistic Research Laboratory (BRL).[7][8]
Construction
Design was started in 1944.[9] The tape-controlled (Harvard architecture)[4][10] machine had two (design allowed for a total of six) processors ("computers")[11] that could operate independently,[5][12][13] an early form of multiprocessing.[4][14]
Weighed about 10 short tons (9.1 t).[9][15]
Significance
- Inspired Richard Hamming to investigate the automatic error-correction, which led to invention of Hamming codes[16][17]
- One of the early[2] electromechanical[3] general purpose computers[4][5][6] (Turing complete)
- First machine of George Stibitz design to use floating point arithmetic
- Had an early form of multiprocessing
Model VI
Built and used internally by Bell Telephone Laboratories, operational in 1949.
Simplified version of the Model V: only one arithmetic unit, about half the relays.
Bibliography
- Andrews, Ernest G. (1949-09-01). "The Bell Computer, Model VI". Proceedings of a Second Symposium on Large-scale Digital Calculating Machinery: 20–31 (58–69).
- Research, United States Office of Naval (1953). A survey of automatic digital computers. Models V and VI. Office of Naval Research, Dept. of the Navy. pp. 9–10 (in reader: 15-16).
- "The relay computers at Bell Labs : those were the machines, part 2". Datamation. The relay computers at Bell Labs : those were the machines, parts 1 and 2 | 102724647 | Computer History Museum. part 2: pp. 47, 49. May 1967.
- Irvine, M. M. (July 2001). "Early digital computers at Bell Telephone Laboratories". IEEE Annals of the History of Computing. 23 (3). pdf: 25–27. doi:10.1109/85.948904. ISSN 1058-6180.
{{cite journal}}
: External link in
(help); Invalid|others=
|ref=harv
(help) - Kaisler, Stephen H. (2016). "Chapter Three: Stibitz's Relay Computers". Birthing the Computer: From Relays to Vacuum Tubes. Cambridge Scholars Publishing. pp. 35–37. ISBN 9781443896313.
- "Г. – Bell Labs – Model V" [G. – Bell Labs – Model V]. oplib.ru (in Russian). Google translation. Retrieved 2017-10-11.
{{cite web}}
: Cite has empty unknown parameter:|dead-url=
(help); External link in
(help)CS1 maint: others (link)|others=
Further reading
- Alt, Franz L. (1948). "A Bell Telephone Laboratories' computing machine. I". Mathematics of Computation. 3 (21): 1–13. doi:10.1090/S0025-5718-1948-0023118-1. ISSN 0025-5718.
- Alt, Franz L. (1948). "A Bell Telephone Laboratories' computing machine. II". Mathematics of Computation. 3 (22): 69–84. doi:10.1090/S0025-5718-1948-0025271-2. ISSN 0025-5718.
- Tomash, Erwin (2008). "The Erwin Tomash Library on the History of Computing: An Annotated and Illustrated Catalog". www.cbi.umn.edu. CBI Hosted Publications. Image: Alt.Bell labs Model V.drawing of Model V, description: A Chapter, pp. 36-37. Retrieved 2018-05-08.
{{cite web}}
: Cite has empty unknown parameter:|dead-url=
(help); Invalid|ref=harv
(help)
- Ceruzzi, Paul E. (1983). "4. Number, Please - Computers at Bell Labs". Reckoners: The Prehistory of the Digital Computer, from Relays to the Stored Program Concept, 1935-1945. Greenwood Publishing Group, Incorporated. pp. 95–99. ISBN 9780313233821.
{{cite book}}
: Invalid|ref=harv
(help) - Bullynck, Maarten (2015). "3. Bell Model V Calculator: Tapes and Controls". Programming men and machines. Changing organisation in the artillery computations at Aberdeen Proving Ground (1916-1946). pp. 9–12.
{{cite book}}
: Invalid|ref=harv
(help)
References
- ^ "Bell Labs Model V, circa 1947 · Gallery". gallery.lib.umn.edu. Retrieved 2018-09-07.
- ^ a b Williams, Samuel Byron (1959). Digital Computing Systems. McGraw-Hill. p. 89.
- ^ a b Research, University of Alabama Bureau of Business (1954). Printed Series. p. 5.
{{cite book}}
:|first1=
has generic name (help) - ^ a b c d Randell, B. (2012). The Origins of Digital Computers: Selected Papers. Springer Science & Business Media. pp. 239, 352. ISBN 9783642961458.
[...] IBM SSEC [...] was hardly a stored program computer [...] being basically a tape-controlled machine in the tradition of the Harvard Mark I or the Bell Laboratories Model V.
- ^ a b c Belzer, Jack; Holzman, Albert G.; Kent, Allen (1976). Encyclopedia of Computer Science and Technology: Volume 3 - Ballistics Calculations to Box-Jenkins Approach to Time Series Analysis and Forecasting. CRC Press. p. 200. ISBN 9780824722531.
- ^ a b Bullynck 2015.
- ^ Ceruzzi 1983, p. 95.
- ^ Datamation 1967, p. 47.
- ^ a b Alt & 21 1948, p. 1.
- ^ Tomash 2008, p. 37.
- ^ Ceruzzi 1983, p. 96.
- ^ Open Library.
- ^
- Amdahl, Gene Myron (1951). The Logical Design of an Intermediate Speed Digital Computer (pdf). University of Wisconsin--Madison. pp. 87–88.
- Alt & 22 1948, p. 75-76
- ^ Dasgupta, Subrata (2014-01-07). It Began with Babbage: The Genesis of Computer Science. Oxford University Press. p. 63. ISBN 9780199309429.
- ^ Irvine 2001, p. 25.
- ^ Ceruzzi 1983, p. 98.
- ^ Thompson, Thomas M. (1983). From Error-Correcting Codes Through Sphere Packings to Simple Groups. Cambridge University Press. pp. 15–17. ISBN 9780883850374.
External Links
- "Drawing of the Model V". Tomash Collection Images. Tomash (2008)
- "Control Panel, Bell Telephone Laboratories Model 5 Computer". National Museum of American History.
Category:1940s computers Category:Early computers Category:Electro-mechanical computers Category:Computer-related introductions in 1946