Chapter 1 Computer Basics
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Early Stored Program Computers
Stored Program Computers Thomas J. Bergin Computing History Museum American University 7/9/2012 1 Early Thoughts about Stored Programming • January 1944 Moore School team thinks of better ways to do things; leverages delay line memories from War research • September 1944 John von Neumann visits project – Goldstine’s meeting at Aberdeen Train Station • October 1944 Army extends the ENIAC contract research on EDVAC stored-program concept • Spring 1945 ENIAC working well • June 1945 First Draft of a Report on the EDVAC 7/9/2012 2 First Draft Report (June 1945) • John von Neumann prepares (?) a report on the EDVAC which identifies how the machine could be programmed (unfinished very rough draft) – academic: publish for the good of science – engineers: patents, patents, patents • von Neumann never repudiates the myth that he wrote it; most members of the ENIAC team contribute ideas; Goldstine note about “bashing” summer7/9/2012 letters together 3 • 1.0 Definitions – The considerations which follow deal with the structure of a very high speed automatic digital computing system, and in particular with its logical control…. – The instructions which govern this operation must be given to the device in absolutely exhaustive detail. They include all numerical information which is required to solve the problem…. – Once these instructions are given to the device, it must be be able to carry them out completely and without any need for further intelligent human intervention…. • 2.0 Main Subdivision of the System – First: since the device is a computor, it will have to perform the elementary operations of arithmetics…. – Second: the logical control of the device is the proper sequencing of its operations (by…a control organ. -
Technical Details of the Elliott 152 and 153
Appendix 1 Technical Details of the Elliott 152 and 153 Introduction The Elliott 152 computer was part of the Admiralty’s MRS5 (medium range system 5) naval gunnery project, described in Chap. 2. The Elliott 153 computer, also known as the D/F (direction-finding) computer, was built for GCHQ and the Admiralty as described in Chap. 3. The information in this appendix is intended to supplement the overall descriptions of the machines as given in Chaps. 2 and 3. A1.1 The Elliott 152 Work on the MRS5 contract at Borehamwood began in October 1946 and was essen- tially finished in 1950. Novel target-tracking radar was at the heart of the project, the radar being synchronized to the computer’s clock. In his enthusiasm for perfecting the radar technology, John Coales seems to have spent little time on what we would now call an overall systems design. When Harry Carpenter joined the staff of the Computing Division at Borehamwood on 1 January 1949, he recalls that nobody had yet defined the way in which the control program, running on the 152 computer, would interface with guns and radar. Furthermore, nobody yet appeared to be working on the computational algorithms necessary for three-dimensional trajectory predic- tion. As for the guns that the MRS5 system was intended to control, not even the basic ballistics parameters seemed to be known with any accuracy at Borehamwood [1, 2]. A1.1.1 Communication and Data-Rate The physical separation, between radar in the Borehamwood car park and digital computer in the laboratory, necessitated an interconnecting cable of about 150 m in length. -
Law and Military Operations in Kosovo: 1999-2001, Lessons Learned For
LAW AND MILITARY OPERATIONS IN KOSOVO: 1999-2001 LESSONS LEARNED FOR JUDGE ADVOCATES Center for Law and Military Operations (CLAMO) The Judge Advocate General’s School United States Army Charlottesville, Virginia CENTER FOR LAW AND MILITARY OPERATIONS (CLAMO) Director COL David E. Graham Deputy Director LTC Stuart W. Risch Director, Domestic Operational Law (vacant) Director, Training & Support CPT Alton L. (Larry) Gwaltney, III Marine Representative Maj Cody M. Weston, USMC Advanced Operational Law Studies Fellows MAJ Keith E. Puls MAJ Daniel G. Jordan Automation Technician Mr. Ben R. Morgan Training Centers LTC Richard M. Whitaker Battle Command Training Program LTC James W. Herring Battle Command Training Program MAJ Phillip W. Jussell Battle Command Training Program CPT Michael L. Roberts Combat Maneuver Training Center MAJ Michael P. Ryan Joint Readiness Training Center CPT Peter R. Hayden Joint Readiness Training Center CPT Mark D. Matthews Joint Readiness Training Center SFC Michael A. Pascua Joint Readiness Training Center CPT Jonathan Howard National Training Center CPT Charles J. Kovats National Training Center Contact the Center The Center’s mission is to examine legal issues that arise during all phases of military operations and to devise training and resource strategies for addressing those issues. It seeks to fulfill this mission in five ways. First, it is the central repository within The Judge Advocate General's Corps for all-source data, information, memoranda, after-action materials and lessons learned pertaining to legal support to operations, foreign and domestic. Second, it supports judge advocates by analyzing all data and information, developing lessons learned across all military legal disciplines, and by disseminating these lessons learned and other operational information to the Army, Marine Corps, and Joint communities through publications, instruction, training, and databases accessible to operational forces, world-wide. -
TX-0 Computer After 10,000 Hours of Operation", L
tX If ,@8s~~~I 17A .:~- I-:· aTg Dc''n'_ !-41 2 . LK - ! v M IT6u i ~~6:illn -jW-~ 4 1 2 The RESEARCH LABORATORY of ELECTRONICS at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY CAMBRIDGE, MASSACHUSETTS 02139 TX-O Computer History John A. McKenzie RLE Technical Report No. 627 June 1999 MASSACHUSETTS INSTITUTE OF TECHNOLOGY RESEARCH LABORATORY OF ELECTRONICS CAMBRIDGE, MASSACHUSETTS 02139 TX-O COMPUTER HISTORY John A. McKenzie October 1, 1974 TX-O COMPUTER HISTORY OUTLINE ABSTRA CT PART I (at LINCOLN ABORATORY) INTRODUCTION 1 DESCRIPTION 2 LOGIC 4 CIRCUITRY 5 MARGINAL CHECKING 6 TRANSISTORS MEMORY (S Memory) SOFTWARE (Initial) 9 TX-2 10 TRANSISTORIZED MEMORY (T Memory) 11 POWER CONTROL 12 IN-OUT RACK 13 CONSOLE 13 PART II (at CAMBRIDGE) INTRODUCTION 14 MOVE to CAMBRIDGE 15 EXTENDED INPUT/OUTPUT FACILITY, Addition of 16 FIRST YEAR at CAMBRIDGE 18 MODE of OPERATION 19 MACHINE EXPANSION PHASE 20 T-MEMORY EXPANSION 21 ORDER CODE ENLARGEMENT 22 DIGITAL MAGNETIC TAPE SYSTEM 24 SOFTWARE DEVELOPMENT 25 APPLICATIONS 29 TIMESHARING (PDP-1) 34 CONCLUSION 34 A CKNOWLEDGEMENT 35 BIBLIOGRAPHY TX-O COMPUTER HISTORY A BSTRA CT The TX-O Computer (meaning the Zeroth Transistorized Computer) was designed and constructed, in 1956, by the Lincoln Laboratory of the Massachusetts Institute of Tech- nology, with two purposes in mind. One objective was to test and evaluate the use of transistors as the logical elements of a high-speed, 5 MHz, general-purpose, stored-program, parallel, digital computer. The second purpose was to provide means for testing a large capacity (65,536 word) magnetic-core memory. -
Symmetrical Transistor Logic A
switching circuits by a substantially- age requirements. The total cost using 2. HIGH SPEED TRANSISTOR COMPUTER CIR CUITS, S. Y. Wong;, A. K. Rapp. IRE-AIEE smaller number of components and con DCTL is comparable with other tech Transistor Circuits Conference, Phila., Pa., Feb. nections, and by extremely-low power niques, because the tightly specified 1956. (Not published.) consumption. Circuit simplicity and low 3. HIGH-TEMPERATURE SILICON-TRANSISTOR COM transistor eliminates considerable com PUTER CIRCUITS, James B. Angell. Proceed dissipation are obtained at the price of plexity in system design and manufac ings of the Eastern • Joint Computer Conference, AIEE Special Publication T-92, Dec. 10-12, 1956, limited gain, small voltage swings, and a ture. pp. 54-57. comparatively low upper limit on in 4. LARGE-SIGNAL BEHAVIOR OP JUNCTION TRAN ternal temperature. Rather severe re SISTORS, J. J. Ebeijs, J. L. Moll. Proceedings, References Institute of Radio Engineers, New York, N. Y., quirements on transistor parameters, vol. 42, Dec. 1954, ij>p. 1761-72. 1. SURFACE-BARRIER TRANSISTOR SWITCHING CIR particularly input impedance and satura CUITS, R. H. Beter, W. E. Bradley, R. B. Brown, 5. TWO-COLLECTOR TRANSISTOR FOR BINARY tion voltage, are compensated by almost M. Rubinoff. Convention Record, Institute of FULL ADDER, R. F. Rtitz. IBM Journal of Research Radio Engineers, New York, N. Y., pt. IV, 1955, and Development, N^w York, N. Y., vol. 1, July negligible dissipation and maximum volt p. 139. 1957, pp. 212-22. I. Basic System Requirements Symmetrical Transistor Logic A. INITIAL The initial specific system for which the R. -
The UNIVAC System, 1948
5 - The WHAT*S YOUR PROBLEM? Is it the tedious record-keepin% and the arduous figure-work of commerce and industry? Or is it the intricate mathematics of science? Perhaps yoy problem is now considered im ossible because of prohibitive costs asso- ciated with co b methods of solution.- The UNIVAC* SYSTEM has been developed by the Eckert-Mauchly Computer to solve such problems. Within its scope come %fm%s as diverse as air trarfic control, census tabu- lakions, market research studies, insurance records, aerody- namic desisn, oil prospecting, searching chemical literature and economic planning. The UNIVAC COMPUTER and its auxiliary equipment are pictured on the cover and schematically pre- sented on the opposite page. ELECTRONS WORK FASTER.---- thousands of times faster ---- than re- lavs and mechanical parts. The mmuses the in- he&ently high speed *of the electron tube to obtain maximum roductivity with minimum equipment. Electrons workfaster %an ever before in the newly designed UNIVAC CO~UTER, in which little more than one-millionth of a second is needed to deal with a decimal d'igit. Coupled with this computer are magnetic tape records which can be read and classified while new records are generated at a rate of ten thousand decimal- digits per second. f AUTOMATIC OPERATION is the key to greater economies in the 'hand- ling of all sorts of information, both numerical and alpha- betic. For routine tasks only a small operating staff is re- -qured. Changing from one job to another is only a matter of a few minutes. Flexibilit and versatilit are inherent in the UNIVAC methoM o e ectronic *contro ma in9 use of an ex- tremely large storage facility for ttmemorizi@ instructions~S LOW MAINTENANCE AND HIGH RELIABILITY are assured by a design which draws on the technical skill of a group of engineers who have specialized in electronic computing techniques. -
Talking About the Development Trend of Modern Computer Technology
2019 3rd International Conference on Computer Engineering, Information Science and Internet Technology (CII 2019) Talking about the Development Trend of Modern Computer Technology Yongpan Wang North China Electric Power University, Baoding 071000, China [email protected] Keywords: modern computer technology; development status; development trend. Abstract: Along with the development of the times and the advancement of society, the popularity of computer technology has not only changed the way people communicate, but also brought more help to economic development. Computer technology promotes the development of China's social economy and information security industry, but security risk management is still an urgent problem in the development of modern computer technology. The analysis from the development history of the computer can explore its technological development direction, and can also predict its development trend and contribute to the overall development of society. Therefore, this paper mainly discusses the development history of computer technology, analyzes its development status, and explores its development direction based on the above research. 1. Introduction The so-called computer is a modern intelligent electronic device that can be used for high-speed data and logic computing and with storage and modification functions. Computer belongs to a common item in our work life. It mainly has two parts of the main structure, some of which can be called hardware system, which is composed of hardware, which maintains the operation of the computer, and the other part is the software system to realize the function of the computer. The two together guarantee the normal operation of the computer. With the continuous advancement of science and technology, modern computer technology is also developing. -
Destruction and Preservation of Cultural Heritage in Former Yugoslavia, Part II
Occasional Papers on Religion in Eastern Europe Volume 29 Issue 1 Article 1 2-2009 Erasing the Past: Destruction and Preservation of Cultural Heritage in Former Yugoslavia, Part II Igor Ordev Follow this and additional works at: https://digitalcommons.georgefox.edu/ree Part of the Christianity Commons, and the Slavic Languages and Societies Commons Recommended Citation Ordev, Igor (2009) "Erasing the Past: Destruction and Preservation of Cultural Heritage in Former Yugoslavia, Part II," Occasional Papers on Religion in Eastern Europe: Vol. 29 : Iss. 1 , Article 1. Available at: https://digitalcommons.georgefox.edu/ree/vol29/iss1/1 This Article, Exploration, or Report is brought to you for free and open access by Digital Commons @ George Fox University. It has been accepted for inclusion in Occasional Papers on Religion in Eastern Europe by an authorized editor of Digital Commons @ George Fox University. For more information, please contact [email protected]. ERASING THE PAST: DESTRUCTION AND PRESERVATION OF CULTURAL HERITAGE IN FORMER YUGOSLAVIA Part II (Continuation from the Previous Issue) By Igor Ordev Igor Ordev received the MA in Southeast European Studies from the National and Kapodistrian University of Athens, Greece. Previously he worked on projects like the World Conference on Dialogue Among Religions and Civilizations held in Ohrid in 2007. He lives in Skopje, Republic of Macedonia. III. THE CASE OF KOSOVO AND METOHIA Just as everyone could sense that the end of the horrifying conflict of the early 1990s was coming to an end, another one was heating up in the Yugoslav kitchen. Kosovo is located in the southern part of former Yugoslavia, in an area that had been characterized by hostility and hatred practically ‘since the beginning of time.’ The reason for such mixed negative feelings came due to the confusion about who should have the final say in the governing of the Kosovo principality. -
Sperry Rand's Third-Generation Computers 1964–1980
Sperry Rand’s Third-Generation Computers 1964–1980 George T. Gray and Ronald Q. Smith The change from transistors to integrated circuits in the mid-1960s marked the beginning of third-generation computers. A late entrant (1962) in the general-purpose, transistor computer market, Sperry Rand Corporation moved quickly to produce computers using ICs. The Univac 1108’s success (1965) reversed the company’s declining fortunes in the large-scale arena, while the 9000 series upheld its market share in smaller computers. Sperry Rand failed to develop a successful minicomputer and, faced with IBM’s dominant market position by the end of the 1970s, struggled to maintain its position in the computer industry. A latecomer to the general-purpose, transistor would be suitable for all types of processing. computer market, Sperry Rand first shipped its With its top management having accepted the large-scale Univac 1107 and Univac III comput- recommendation, IBM began work on the ers to customers in the second half of 1962, System/360, so named because of the intention more than two years later than such key com- to cover the full range of computing tasks. petitors as IBM and Control Data. While this The IBM 360 did not rely exclusively on lateness enabled Sperry Rand to produce rela- integrated circuitry but instead employed a tively sophisticated products in the 1107 and combination of separate transistors and chips, III, it also meant that they did not attain signif- called Solid Logic Technology (SLT). IBM made icant market shares. Fortunately, Sperry’s mili- a big event of the System/360 announcement tary computers and the smaller Univac 1004, on 7 April 1964, holding press conferences in 1005, and 1050 computers developed early in 62 US cities and 14 foreign countries. -
John William Mauchly
John William Mauchly Born August 30, 1907, Cincinnati, Ohio; died January 8, 1980, Abington, Pa.; the New York Times obituary (Smolowe 1980) described Mauchly as a “co-inventor of the first electronic computer” but his accomplishments went far beyond that simple description. Education: physics, Johns Hopkins University, 1929; PhD, physics, Johns Hopkins University, 1932. Professional Experience: research assistant, Johns Hopkins University, 1932-1933; professor of physics, Ursinus College, 1933-1941; Moore School of Electrical Engineering, 1941-1946; member, Electronic Control Company, 1946-1948; president, Eckert-Mauchly Computer Company, 1948-1950; Remington-Rand, 1950-1955; director, Univac Applications Research, Sperry-Rand 1955-1959; Mauchly Associates, 1959-1980; Dynatrend Consulting Company, 1967-1980. Honors and Awards: president, ACM, 1948-1949; Howard N. Potts Medal, Franklin Institute, 1949; John Scott Award, 1961; Modern Pioneer Award, NAM, 1965; AMPS Harry Goode Memorial Award for Excellence, 1968; IEEE Emanual R. Piore Award, 1978; IEEE Computer Society Pioneer Award, 1980; member, Information Processing Hall of Fame, Infornart, Dallas, Texas, 1985. Mauchly was born in Cincinnati, Ohio, on August 30, 1907. He attended Johns Hopkins University initially as an engineering student but later transferred into physics. He received his PhD degree in physics in 1932 and the following year became a professor of physics at Ursinus College in Collegeville, Pennsylvania. At Ursinus he was well known for his excellent and dynamic teaching, and for his research in meteorology. Because his meteorological work required extensive calculations, he began to experiment with alternatives to mechanical tabulating equipment in an effort to reduce the time required to solve meteorological equations. -
Sperry Corporation, Univac Division Records 1825.I
Sperry Corporation, Univac Division records 1825.I This finding aid was produced using ArchivesSpace on September 14, 2021. Description is written in: English. Describing Archives: A Content Standard Manuscripts and Archives PO Box 3630 Wilmington, Delaware 19807 [email protected] URL: http://www.hagley.org/library Sperry Corporation, Univac Division records 1825.I Table of Contents Summary Information .................................................................................................................................... 4 Historical Note ............................................................................................................................................... 4 Scope and Content ......................................................................................................................................... 5 Administrative Information ............................................................................................................................ 7 Related Materials ........................................................................................................................................... 8 Controlled Access Headings .......................................................................................................................... 9 Appendices ..................................................................................................................................................... 9 Bibliography ................................................................................................................................................ -
History of ENIAC
A Short History of the Second American Revolution by Dilys Winegrad and Atsushi Akera (1) Today, the northeast corner of the old Moore School building at the University of Pennsylvania houses a bank of advanced computing workstations maintained by the professional staff of the Computing and Educational Technology Service of Penn's School of Engineering and Applied Science. There, fifty years ago, in a larger room with drab- colored walls and open rafters, stood the first general purpose electronic computer, the Electronic Numerical Integrator And Computer, or ENIAC. It spanned 150 feet in width with twenty banks of flashing lights indicating the results of its computations. ENIAC could add 5,000 numbers or do fourteen 10-digit multiplications in a second-- dead slow by present-day standards, but fast compared with the same task performed on a hand calculator. The fastest mechanical relay computers being operated experimentally at Harvard, Bell Laboratories, and elsewhere could do no more than 15 to 50 additions per second, a full two orders of magnitude slower. By showing that electronic computing circuitry could actually work, ENIAC paved the way for the modern computing industry that stands as its great legacy. ENIAC was by no means the first computer. In 1839, an Englishman Charles Babbage designed and developed the first true mechanical digital computer, which he described as a "difference engine," for solving mathematical problems including simple differential equations. He was assisted in his work by a woman mathematician, Ada Countess Lovelace, a member of the aristocracy and the daughter of Lord Byron. They worked out the mathematics of mechanical computation, which, in turn, led Babbage to design the more ambitious analytical engine.