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Topic: IBM 1620 II

	IBM Archives: 1620 Data Processing System
		The IBM 1620 was a general-purpose, stored-program data processing system for small businesses, research and engineering departments of large companies, and schools requiring solutions to complex problems in the areas of engineering, research, and management science.
		With the 1711 model 2 and 1712 Multiplexer and Terminal Unit connected to the 1620, the computer not only received data from analog measuring devices, but fed results through the 1711/1712 to control processes by closing contacts which completed circuits to the instrumentation for closed-loop process control.
		1620 symbolic language allowed the programmer to refer to instructions and data in the program by name or other meaningful designation without regard to their location in the machine to facilitate relocating sections of programs, incorporating subroutines, and inserting or deleting instructions.
	www-03.ibm.com /ibm/history/exhibits/mainframe/mainframe_PP1620.html (1005 words)

	NationMaster - Encyclopedia: IBM 1620
		Other IBM circuit types used were referred to as: Alloy (some logic, but mostly various non-logic functions, named for the kind of transistors used), CTRL (another type of RTL, but slower than SDTRL), CTDL (a type of diode-transistor logic (DTL)), and DL (another type of RTL, named for the kind of transistor used, "drift" transistors).
		Work was begun on a 1620 Model III in year-TBD, but the project was quickly canceled as IBM wanted to promote sales of their new System/360 and discontinue the old lines.
		The IBM 1620 Model I was the original implementation of the IBM 1620 scientific computer, introduced in 1959.
	www.nationmaster.com /encyclopedia/IBM-1620 (1654 words)

	Kids.Net.Au - Encyclopedia > IBM 1620
		In the middle 3 digits of 5-digit addresses (on the 1620 II) they were set to select one of 7 index registers[?].
		IBM could only build one of the two and the Poughkeepsie proposal won because "the San Jose version is top of the line and not expandable, while your proposal has all kinds of expansion capability - never offer a machine that cannot be expanded".
		Following announcement of the IBM 1620 on October 22, 1959, due to an internal reorganization of IBM, it was decided to transfer the computer from the Data Processing Division at Poughkeepsie (large scale mainframe computers only) to the General Products Division at San Jose (small computers and support products only) for manufacturing.
	www.kids.net.au /encyclopedia-wiki/ib/IBM_1620 (1037 words)

	IBM 1620 Model II : 1620 II
		The IBM 1620 II (commonly called simply the Model II) was a vastly improved version of the original IBM 1620 architecture....
		IBM 1620 Model II : 1620 II The IBM 1620 II (commonly called simply the Model II) was a vastly improved version of the original IBM 1620 architecture.
		The entire Core memory was in the IBM 1625 Memory unit.
	www.wordlist.org /16/1620-ii.html (344 words)

	NationMaster - Encyclopedia: IBM 1620 Model II
		The IBM 1620 Model II (commonly called simply the Model II) was a vastly improved implementation, compared to the original Model I, of the IBM 1620 scientific computer architecture.
		The console typewriter was replaced with a modified Selectric typewriter, which could type at 15 cps – a 50% improvement over the Model I. The entire Core memory was in the IBM 1625 Memory unit.
		One industry magazine (Datamation) mentioned that the 1620 was the first IBM computer for which the basic system could be leased for a monthly rate less than its number.
	www.nationmaster.com /encyclopedia/IBM-1620-Model-II (614 words)

	IBM 1620 (Site not responding. Last check: 2007-11-03)
		Most of the logic circuitry of the 1620 was a type of resistor-transistor logic (RTL) using "drift" transistors (a type of transistor invented by Herbert Kroemer in 1957) fortheir speed, that IBM referred to as SDTRL.
		Following announcement of the IBM 1620 on October 22, 1959, due to an internal reorganization of IBM, it was decided to transfer the computer from the Data ProcessingDivision at Poughkeepsie (large scale mainframe computers only) to the General Products Division at San Jose (small computers andsupport products only) for manufacturing.
		Work was begun on a 1620 Model III in year- TBD, but the projectwas quickly canceled as IBM wanted to promote sales of their new System/360 anddiscontinue the old lines.
	www.therfcc.org /ibm-1620-127982.html (1301 words)

	IBM 1620 (Site not responding. Last check: 2007-11-03)
		The IBM 1620 was announced by IBM on October 21 1959 and marketed as an inexpensive "Scientific It was withdrawn on November 19 1970.
		Following announcement of the IBM 1620 on October 22 1959 due to an internal reorganization of it was decided to transfer the computer the Data Processing Division at Poughkeepsie (large mainframe computers only) to the General Products at San Jose (small computers and support only) for manufacturing.
		Work was begun on a 1620 Model in year- TBD but the project was quickly canceled IBM wanted to promote sales of their System/360 and discontinue the old lines.
	www.freeglossary.com /IBM_1620 (1417 words)

	IBM 1710 (Site not responding. Last check: 2007-11-03)
		Ibm 1710 был системой управления производственным процессом вышед на рынок ibm вышел на рынок в предыдущих й9ь0с.
		Ibm 1620 используемый в системе 1710 был доработан в нескольких дорог, самое очевидное был добавлением очень примитивного механизма interrupt оборудования.
		It is licensed under the GNU free documentation license.
	www.faktoru.com /wiki/ru/ib/Ibm%201710.htm (92 words)

	IBM 1710
		The IBM 1710 was a process control system that IBM marketed in the early 1960s.
		It used either a 1620 I or a 1620 II Computer and specialized I/O devices (e.g., IBM 1711 A/D and D/A Converter, IBM 1712 Discrete I/O and Analog Multiplexer, factory floor operator control panels).
		The IBM 1620 used in the 1710 system was modified in several ways, the most obvious was the addition of a very primitive hardware interrupt mechanism.
	www.starrepublic.org /encyclopedia/wikipedia/i/ib/ibm_1710.html (99 words)

	IBM 1710 (Site not responding. Last check: 2007-11-03)
		IBM 1710 était un système de contrôle du processus de cycle qu'IBM a lancé sur le marché au début des années 60.
		Il a utilisé un I 1620 ou un ordinateur 1620 II et a spécialisé les unités d'E/S.
		IBM 1620 utilisé dans le système 1710 a été modifié de plusieurs manières, le plus évident était l'addition d'un mécanisme d'interruption très primitif de visserie.
	www.faktis.com /wiki/fr/ib/IBM%201710.htm (116 words)

	IBM 1620
		IBM 1620 byl představen IBM v 1959 a prodávaný jak levný “vědecký počítač”.
		Upravené verze 1620 byl používán jako procesor IBM 1710 a IBM 1720 výrobní proces kontrolní systémy.
		Uprostřed 3 číslice 5-adresy číslice (na 1620 II) oni byli připravení vybrat jednoho 7 indexové registry.
	wikipedia.infostar.cz /i/ib/ibm_1620.html (1083 words)

	IBM 1620 Model II Info - Bored Net - Boredom (Site not responding. Last check: 2007-11-03)
		IBM 1620 Model II The IBM 1620 Model II (commonly called simply the Model II) was a vastly improved implementation, compared to the original Model I, of the IBM 1620 scientific computer architecture.
		The console typewriter was replaced with a Selectric typewriter, which could type at 15 cps – a 50% improvement over the Model I. The entire Core memory was in the IBM 1625 Memory unit.
		Memory cycle time was halved compared to the Model I's 1623, to 10μs (i.e., the cycle speed was raised to 100kHz) by using faster cores.
	www.borednet.com /e/n/encyclopedia/i/ib/ibm_1620_model_ii.html (332 words)

	IBM 1620 - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-03)
		Although the IBM 1620's architecture was very popular in the scientific and engineering community, computer scientist Edsger Dijkstra pointed out several flaws in its design in EWD37, "A review of the IBM 1620 data processing system" (see http://www.cs.utexas.edu/users/EWD/index00xx.html at the Dijkstra archive at the University of Texas).
		These flaws (and similar ones in other machines) may have caused IBM's decline, which started in the 1960s, as a serious competitor in scientific computing, opening up a market which led to the development of the DEC PDP-8.
		IBM 1311 - Disk drive: Model 3 master drive controlling up to 3–Model 2 slave drives.
	www.gogog.com /project/wikipedia/index.php/IBM_1620 (1675 words)

	Saga
		In September 1960 the representative of IBM in Iceland, Ottó A. Michelsen, wrote to the Faculty of Engineering at the University of Iceland, and to the National Research Council, offering a 60% Educational Allowance on the purchase or rent of an IBM 1620 Model I computer that had been launched in October 1959.
		IBM followed that up by again offering the University of Iceland a 60% Educational Allowance on the rent or purchase of an IBM 1620 computer and now the University responded positively.
		An agreement for the purchase of an IBM 1620 Model II computer, that had been announced in December 1962 and was a significant improvement on Model I, was signed in December 1963 for delivery in December 1964.
	www.hi.is /~oddur/saga/t_fyrstu_tolvur/IBM1620.html (998 words)

	IBM 1620 (Site not responding. Last check: 2007-11-03)
		Ibm 1620 был объявлен IBM на 21 -го октября, 1959 г.
		Ibm смог только построить одно из 2 и выигранное предложение Poughkeepsie потому что "вариант san Jose верхней частью линии и expandable, пока ваше предложение имеет все виды возможности расширения - никогда не предлагайте машину которую можно расширить".
		После объявления ibm 1620 на 22 -го октября, 1959 г., должно к внутренне реорганизации ibm, было решены, что перенесло компьютер от введенного информачи разделения на Poughkeepsie к вообще расделению продукта на san Jose для изготавливания.
	www.faktoru.com /wiki/ru/ib/Ibm%201620.htm (844 words)

	[No title]
		LGP-30 When I came to the University of Alberta in 1963 the Computing Centre was operating an IBM 1620 in a closed-shop manner with users submitting their programs and data on decks of punched cards which were processed by Computing Centre staff.
		The 1620 had been purchased in 1961 as a replacement for the LGP-30 which continued to be used until the middle of 1963.
		IBM 5100 In the late 1960s Bill Adams and I began to experiment with the use of computers in the classroom.
	www.cs.ualberta.ca /~smillie/ComputerAndMe/TextTwo.txt (4509 words)

	IBM 1620 Computer
		We had an IBM 1620 there and they taught a one-semester course in Computer Math.
		The 1620 was fun for calculating large numbers, such as pi to many digits of accuracy, but it was incredibly slow.
		The 1620 had a "pause" button that would freeze the machine, and then you could press another button to have it step through machine instructions one at a time.
	paul.mcnabbs.org /ibm1620 (807 words)

	IBM in TutorGig Encyclopedia
		IBM Director is an element management system EMS sometimes referred to as a workgroup management system first introduced by IBM in 1993 as NetFinity Manager.
		IBM 7070 was a Decimal Architecture intermediate data processing system that was introduced by IBM in June 1960.
		The IBM 3732 is a word processing word processing terminal derived from the IBM 3270 family of computer terminal terminals from IBM.
	www.tutorgig.com /es/IBM (927 words)

	History of computing: IBM 1620
		The 1620's Architecture It was a variable "word" length decimal (BCD) computer with a memory that could hold anything from 20,000 to 60,000 decimal digits increasing in 20,000 decimal digit increments.
		Development History In 1958 IBM assembled a team at the Poughkeepsie, New York development laboratory to study the "small scientific market".
		Implementation "Levels" of the IBM 1620 * Model I o Level A; prototype.
	www.african-american-inventors.com /books/History_of_computing/IBM_1620.shtml (924 words)

	IBM 1620 Model II - Free net encyclopedia (Site not responding. Last check: 2007-11-03)
		The core memory (@ address 00300..00399) that was freed by the replacement of the addition table with hardware was used for storage of two selectable "bands" of seven 5-digit index registers.
		This made the Model II very practical for applications that needed to manipulate data formatted in octal by other computers (e.g., the IBM 7090).
		IBM 1620 Model II at the Thessaloniki Science Center and Technology Museum
	www.netipedia.com /index.php/IBM_1620_Model_II (496 words)

	wikien.info: Main_Page (Site not responding. Last check: 2007-11-03)
		Modified versions of the 1620 were used as the CPU of the IBM 1710 and IBM 1720 Industrial Process Control Systems (making it the first computer considered reliable enough for real-time process control of factory equipment).
		The successor to the 1620, the IBM 1130 was based on a totally different, 16-bit binary architecture.
		However usage of the term Trigger was retained in all the documentation when referring to a flip-flop, as it was IBM's conventional term (as alphamerics was their term for alphanumerics).
	www.pardus.info /index.php?title=IBM_1620 (1901 words)

	USATODAY.com - Pioneer IBM finally finds its way out of the PC wilderness (Site not responding. Last check: 2007-11-03)
		IBM's entry into PCs witrh this 1981 model legitimized the new technology but ran counter to its core strength.
		Back then, IBM dominated computing the way Fidel Castro dominates Cuba, and Apple was like some dissident whose radical ideas were catching on.
		But IBM started losing business to companies such as Compaq and later Gateway and Dell — companies that were created to make and sell PCs.
	www.usatoday.com /money/industries/technology/maney/2004-12-07-ibm_x.htm (892 words)

	IBM 1620 (Site not responding. Last check: 2007-11-03)
		IBM 1620 a été annoncé par IBM octobre 21, 1959 et a lancé sur le marché comme "ordinateur scientifique" peu coûteux.
		IBM pourrait seulement établir un des deux et la proposition de Poughkeepsie remportée parce que "la version de San Jose est sommet de la ligne et non extensible, alors que votre proposition a toutes sortes de possibilités d'expansion - ne jamais offrir une machine qui ne peut pas être augmentée".
		Travailler a été commencé sur 1620 un model III en année-TBD, mais le projet a été rapidement annulé comme IBM a voulu favoriser des ventes de leur nouveau System/360 et discontinuer les vieilles lignes.
	www.faktis.com /wiki/fr/ib/IBM%201620.htm (1578 words)

	IBM 1620 (Site not responding. Last check: 2007-11-03)
		Le versioni modificate dei 1620 sono state usate come il CPU sistemi di controllo di processo industriale dell'IBM 1710 e dell'IBM 1720.
		In IBM 1958 montato una squadra al Poughkeepsie, laboratorio di sviluppo de New York per studiare "piccolo mercato scientifico".
		A seguito dell'annuncio dell'IBM 1620 il 22 ottobre 1959, dovuto una riorganizzazione interna dell'IBM, è stato deciso per trasferire il calcolatore dalla divisione dell'elaborazione dei dati a Poughkeepsie alla divisione di prodotti generale al San Jose per manufacturing.
	www.facteri.com /wiki/it/ib/IBM%201620.htm (1471 words)

	IBM 1620 Definition. Define IBM 1620. What is IBM 1620?
		Because the 1620 was popular with colleges, IBM ran a clearing house of software for a nominal cost such as {Snobol}, {COBOL}, chess games, etc. The model II, released about three years later, could add and subtract without tables.
		Some of the model I's options were standard on the model II, like {indirect addressing} and the {console} {teletype} changed from a model C to a {Selectric}.
		1620 consoles were used as props to represent {Colossus} in the film "The Forbin Project", though most of the machines had been scrapped by the time the film was made.
	www.learnthat.com /define/view.asp?id=885 (671 words)

	CSD Annual Report and Planning Document 99-2000
		UNB's first IBM computer, a 1620 Model II acquired in 1964, was followed by an exclusive succession of IBM System /360, /370 and /390 architecture processors, which together spanned the 36-year period, 1964 to 2000.
		Wasson in 1964, UNB raised a significant part of the financing for its first IBM mainframe by negotiating a "computing partnership" with NBEPC which contributed 40% of the cost of the 1620 in return for prepaid service at privileged processing rates over the life of the machine.
		Strengths of the IBM mainframe were (and still are): highly reliable hardware and operating systems, top-notch security, multiple high-speed channels, convenient job scheduling, processing and output control, excellent timesharing vs batch cpu resource control, automated DASD management of myriads of datasets comprising huge amounts of storage; and, the versatility of automated operations.
	www.unb.ca /csd/about/report/2000/timeline.html (689 words)

	Critique of IBM on the bell-like sounds
		At 230 Hz, Channel II has a prominent peak, and Channel I has a peak which is not very large in absolute terms but stands out against the background.
		IBM has just undermined their argument against shots recorded on the Channel I tape.
		Now IBM pretends they showed commonality of source and concludes their article by discussing a Channel II electrical disturbance which did not appear on Channel I. "If such electrical disturbances are picked up on these recordings, there must be other such examples.
	www.members.aol.com /hdblenner/critique.htm (2167 words)

	Computing at Columbia Timeline
		An IBM 1620 at Lamont Doherty Geological Observatory.
		Unlike previous IBM mainframes, the 360 was available in a range of compatible models, from small slow machines such as the Model 20 (suitable mainly for printing decks of cards) to the Model 92 supercomputer that they proposed to Columbia, with many in between (IBM's proposal was for a coupled Model 92 and Model 75).
		IBM 2741 and other terminals that were not supported yet and then to create a conversational monitor called CLEO to allow job submission and retrieval from terminals [24].
	www.columbia.edu /acis/history (14488 words)

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