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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. -
The Electrocom
2013-14 Published Month/Year - March’14 Update yourself with the latest technology, construct some circuits, try some brain teasers,& check your knowledge with… THE ELECTROCOM An Initiative by SOCIETY OF ELECTRONICS ENGINEERS(SEE-MIET) Department of Electronics and communication Engg. Meerut Institute of Engineering and Technology, Meerut Contents EDITOR’S CUT TECH NEWS The ELECTROCOM is a platform for the students who want to enter the vast world of electronics. It helps you to acquire the knowledge and to ROCHAK TATHYA develop innovative thoughts and motivate you for the perseverance. We just want to give you the path to explore the electronic boom. Soon we BRAIN TEASERS are going to organize a national level quiz competition. We are also going to provide you with test series for GATE, notes of the required subject, help against the queries and blog for CONSTRUCTION the details of electronics. You can visit electrocom.see on Google to download the material required. This issue is primarily focusing on the WORDS OF WORTH new era of technology in the field of electronics, circuit analysis, E- crossword and live project with revolutionary ideas which can be implemented in the institute. We are EXPRESSIONS looking forward to hear from you in the form of your articles, suggestions, ideas and queries to make our endeavour better in every form. Editorial Team 2 How Water Could Help Make Better Batteries Water could be the key to producing a cheaper, more environmentally friendly and less dangerous way of making the lithium-ion batteries that power so many everyday gadgets, researchers say. -
Sperry Corporation, UNIVAC Division Photographs and Audiovisual Materials 1985.261
Sperry Corporation, UNIVAC Division photographs and audiovisual materials 1985.261 This finding aid was produced using ArchivesSpace on September 14, 2021. Description is written in: English. Describing Archives: A Content Standard Audiovisual Collections PO Box 3630 Wilmington, Delaware 19807 [email protected] URL: http://www.hagley.org/library Sperry Corporation, UNIVAC Division photographs and audiovisual materials 1985.261 Table of Contents Summary Information .................................................................................................................................... 3 Historical Note ............................................................................................................................................... 4 Scope and Content ......................................................................................................................................... 5 Arrangement ................................................................................................................................................... 6 Administrative Information ............................................................................................................................ 6 Related Materials ........................................................................................................................................... 7 Controlled Access Headings .......................................................................................................................... 8 Bibliography -
Occam User Group
for all users of occam and the transputer N912 January 1990 Contents EDITORIAL 2 Contributions to the newsletter 3 Occam user group publications 3 North American transputer users group publications 4 FORTHCOMING 4 Twelfth occam user group technical meeting 4 North American transputer users group spring meeting 5 Third Japanese transputer/ occam international conference 5 Thirteenth occam user group technical meeting 6 North American transputer users group fall meeting 6 Transputing 1991 7 REPORTS 9 Inaugural meeting of the occam user group: Latin America 9 Eleventh occam user group technical meeting 10 Why did the transputer cross The Pond? 14 Second seminar of the Swedish transputer user group 15 continued on back cover Meiko In-Sun Computing Surface Hardware (see page 98) occam is a trade mark of the INMOS Group of Companies 2 occam user group newsletteT EDITORIAL ~ ~ New groups seem to be springing up all around the world; this issue of nan the newsletter carries contact addresses for the first time for groups in U:E ~ Sweden and Latin America. We have contributions from as far afield as Brazil, the Basque country, and Bristol. It is all here: from exotic hardware (see for example pages 19, 82, 98 and many of the product announcements) to expressions of concern that software should be as unexciting as possible (see pages 22, 27). I would particularly like to draw your attention to the initiative to promote the occam language (see page 84); and to the CODE system from C-DAC (see pages 86 and18), an impromptu presentation of which stole the show in the exhibition at the OUG technical meeting in Edinburgh. -
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 ................................................................................................................................................ -
Forty Years of Marconi Radar from 1946 to 1986 by R
172 Forty Years of Marconi Radar from 1946 to 1986 by R. W. SIMONS, OBE, C.Eng., FIEE, F.I.Mgt. Roy W. Simons joined Marconi's Wireless Telegraph Company in 1943 as a member of the and J. W. SUTHERLAND, CBE, MA, FIEE Research Division. After an initial period formerly at Marconi Radar Systems developing special receivers for wartime directionĆfinding systems, he worked exclusively on military and civil radar systems until his retirement in 1986. He was the first Technical Director of the newlyĆformed Marconi Radar Systems Ltd. in 1969 and in the subsequent The earliest concept of radar in the Marconi years he took responsibility for all Company Company came on 20th June 1922 when development at both Chelmsford and Leicester, as well as - for a period - all Company Guglielmo Marconi addressed a joint meeting in production. Latterly he had direct control of the Radar Research Laboratory at Baddow. He was New York of the American Institute of Electrical appointed OBE in 1986. He is currently Visiting Engineers and Institute of Radio Engineers, Professor in Priciples of Engineering Design at Sussex University. receiving the latter's Medal of Honour on the same (EĆmail: roy [email protected]) occasion. He said: John Sutherland was educated at Queens' College Cambridge from 1941Ć2 and 1946Ć48, ‘In some of my tests I have noticed the effects and graduating with a BA in 1947 and MA in 1949. He was a Radar Officer in the Royal Navy deflection of these waves by metallic objects miles between 1942 and 1946, serving in the Mediterranean and the Atlantic. -
CHAIN HOME TOWER at Great Baddow - Response to Case #: 1454834
CHAIN HOME TOWER at Great Baddow - Response to case #: 1454834 My interest in this case stems from my family history. My father Bruce Neale, later to become Chief Engineer at Marconi Radar, was an RAF Warrant Officer in WW2 and worked on CH and later precision bombing aids such as OBOE and GEE. This is how he met my mother, a WAAF Sergeant who initially monitored the CH oscilloscope traces looking for the reflections of incoming German aircraft – some signals which were probably launched from that very RAF Canewdon (now Baddow) tower! Below is the remarkable photograph of my ‘to be’ parents actually in an Oboe station in 1943 courtesy of Colin Latham’s book ‘Radar-A wartime Miracle’. I have always regarded myself as a child of Radar! The ‘CH-The First Operational Radar’ article ( www.radarpages.co.uk/mob/ch/chainhome.htm ) was written by my father for the GEC Journal, a special edition commemorating the 50th anniversary of Robert Watson Watt and Arnold Wilkins’ demonstration of the feasibility of detecting radio reflections from aircraft at Weedon, Northamptonshire in 1935. My parents got to know Arnold Wilkins and his wife towards the end of all of their lives. The article has become the reference paper for anybody interested in the CH Radar System and he gave many lectures on the subject. My father had joined the Marconi Company in the early 1950’s when they won the contract for project ROTOR to upgrade the UK WW2 Early Warning Radar Network which included the later versions of CH and he officially retired in 1985 although he continued as a consultant until his death. -
Travels in Goneland
Travels in Goneland Michael Prior 1 Introduction It is easy enough to see the remains of the earliest industrial revolution if one knows where to look; along the steep watercourses that powered the first mechanized mills. Now overgrown by trees and bushes, these stone basins and channels provided the -‐ water power for the first mechanized mills with power looms and spinning frames. They also provided the spark for the first industrial labour-‐ protests, the Luddites, mostly handloom weavers, who smashed the mechanized mills and were themselves broken on gallows in York and Manchester. Staups Mill and waterfall, Jumble Hole clough, Hebden Bridge The next stage of the industrial development based on coal also can also still be seen in the remaining chimneys of the mills and factories of northern England and the Scottish . lowlands The huge buildings of the final stages of this revolution are impossible to miss, close to the centres of Manchester, Leeds and all the northern towns and cities which sat on the coal measures. It was this which has defined Britain to this day. Travel south from Stoke, east from Leeds or north Newcastle and it is easy enough to see where the accessible coal seams ran out. Population thins out and settlements are located ural in nat places, valley bottoms along rivers rather than up hillsides where the coal seams outcropped. There are few traces left of the mines. The headworks are gone and diligent work has mostly removed or vegetated the spoil heaps f which once disfigured much o 2 the countryside. Even so, the photographic record of the mines which once covered much of Britain remains immense After the fire which shut Daw Mill in 2013, only Kellingley and Thoresby remained, both closed in 2015. -
TPC-8 TESLA AGAINST MARCONI the Dispute for the Radio Patent
TPC-8 TESLA AGAINST MARCONI The Dispute for the Radio Patent Paternity Paul Brenner, M.Sc., Senior Member, IEEE, Member WREN, Israeli Representative in the World Renewable Energy Council Abstract: The goal of this paper is to present the an academic title. Tesla was an autodidact. He started multilateral personality of the greatest inventor in to read many works, memorizing whole books. history, Nikola Tesla and the claims against Specialists supposed that T. had a photographic Guglielmo Marconi for the radio patent paternity. memory. In his autobiography he tells that many Index Terms: Tesla (T.), Marconi (M.), coherer, times he experienced detailed moments of inspiration. magnifying transformer, LW (long wave), SW Since his childhood, T. was stricked by halucinations (short wave), MW (medium wave). accompanied frequently by blinding flashes of light. Much of the effects of this peculiar affliction were related to a word or an idea; the simple hearing of the I. INTRODUCTION: name of an item was able to induce its detailed A genius is born - Nikola Tesla [1] envisioning in Tesla's mind. Most of his inventions would have been apriori visualized in detail in his Nikola Tesla (Fig.1) saw mind.( picture thinking ). This perfect photographic the daylight for the first memory was perhaps a hereditary inheritance from time in his life in Smiljan, his mother, possessing, as said, a natural gift in a small village in Croatia, remembering entire epic poems - who knows? in the Lika region, on July 10, 1856. His father, Rev. Hungary and France Milutin Tesla was a priest in the Serbian Orthodox After moving to Budapest in 1881 he started to work Church Metropolitanate in Tivadar Puskás's Hungarian National Telephone of . -
A Decade of Semiconductor Companies : 1988 Edition
1988 y DataQuest Do Not Remove A. Decade of Semiconductor Companies 1988 Edition Components Division TABLE OF CONTENTS Page I. Introduction 1 II. Venture Capital 11 III. Strategic Alliances 15 IV. Product Analysis 56 Emerging Technology Companies 56 Analog ICs 56 ASICs 58 Digital Signal Processing 59 Discrete Semiconductors 60 Gallium Arsenide 60 Memory 62 Microcomponents 64 Optoelectronics 65 Telecommunication ICs 65 Other Products 66 Bubble Memory 67 V. Company Profiles (139) 69 A&D Co., Ltd. 69 Acrian Inc. 71 ACTEL Corporation 74 Acumos, Inc. 77 Adaptec, Inc. 79 Advanced Linear Devices, Inc. 84 Advanced Microelectronic Products, Inc. 87 Advanced Power Technology, Inc. 89 Alliance Semiconductor 92 Altera Corporation 94 ANADIGICS, Inc. 100 Applied Micro Circuits Corporation 103 Asahi Kasei Microsystems Co., Ltd. 108 Aspen Semiconductor Corporation 111 ATMEL Corporation 113 Austek Microsystems Pty. Ltd. 116 Barvon Research, Inc. 119 Bipolar Integrated Technology 122 Brooktree Corporation 126 California Devices, Ihc. 131 California Micro Devices Corporation 135 Calmos Systems, Inc. 140 © 1988 Dataquest Incorporated June TABLE OF CONTENTS (Continued) Pagg Company Profiles (Continued) Calogic Corporation 144 Catalyst Semiconductor, Inc. 146 Celeritek, Inc. ISO Chartered Semiconductor Pte Ltd. 153 Chips and Technologies, Inc. 155 Cirrus Logic, Inc. 162 Conductus Inc. 166 Cree Research Inc. 167 Crystal Semiconductor Corporation 169 Custom Arrays Corporation 174 Custom Silicon Inc. 177 Cypress Semiconductor Corporation 181 Dallas Semiconductor Corporation 188 Dolphin Integration SA 194 Elantec, Inc. 196 Electronic Technology Corporation 200 Epitaxx Inc. 202 European Silicon Structures 205 Exel Microelectronics Inc. 209 G-2 Incorporated 212 GAIN Electronics 215 Gazelle Microcircuits, Inc. 218 Genesis Microchip Inc. -
Chad Is Our Most Important Product
CHAD IS OUR MOST IMPORTANT PRODUCT An Engineer’s Memoir of Teletype Corporation Jim Haynes The author operating W5YM in 1957 1 I. How it all started When I was growing up in a small town I thought it was an awfully boring place. Now I realize that I had some opportunities that probably would not have been available in a larger city. For one thing, it was possible for a kid to hang out at the newspaper office, telephone office, telegraph office, or radio station and watch a Teletype machine in operation. Things were slow enough that the people who worked there usually had time to answer questions. When I wanted to understand how a Teletype machine worked the wire chief at the telephone office let me borrow the “green book”1. After reading all about selector cams and swords and code bars and pull bars I could drop in to the Western Union office where the manager, a friend of the family, let me play with a little-used printer and see in action all the parts I had read about. Another advantage to living out in the sticks was that television arrived very late. This allowed a pretty good news stand to remain in full operation through most of my teen years. Jack’s News Stand carried several magazines of interest: Radio-Electronics, Radio & Television News, and the amateur radio magazines QST and CQ. Hugo Gernsback’s Radio-Electronics ran a series of articles by Ed- mund C. Berkeley about digital computers, which gave me an early introduction to binary arithmetic, Boolean algebra, and logic circuits. -
Science Policy Under Thatcher
Science Policy under Thatcher Science Policy under Thatcher Jon Agar First published in 2019 by UCL Press University College London Gower Street London WC1E 6BT Available to download free: www.uclpress.co.uk Text © Jon Agar, 2019 Jon Agar has asserted his right under the Copyright, Designs and Patents Act 1988 to be identified as author of this work. A CIP catalogue record for this book is available from The British Library. This book is published under a Creative Commons 4.0 International license (CC BY 4.0). This license allows you to share, copy, distribute and transmit the work; to adapt the work and to make commercial use of the work providing attribution is made to the authors (but not in any way that suggests that they endorse you or your use of the work). Attribution should include the following information: Agar, J. 2019. Science Policy under Thatcher. London, UCL Press. https://doi.org/10.14324/111.9781787353411 Further details about Creative Commons licenses are available at http:// creativecommons.org/licenses/ Any third-party material in this book is published under the book’s Creative Commons license unless indicated otherwise in the credit line to the material. If you would like to re-use any third-party material not covered by the book’s Creative Commons license, you will need to obtain permission directly from the copyright holder. ISBN: 978-1-78735-343-5 (Hbk) ISBN: 978-1-78735-342-8 (Pbk) ISBN: 978-1-78735-341-1 (PDF) ISBN: 978-1-78735-344-2 (epub) ISBN: 978-1-78735-345-9 (mobi) ISBN: 978-1-78735-346-6 (html) DOI: https://doi.org/10.14324/111.9781787353411 For Kathryn, Hal and Max, and my parents Ann and Nigel Agar.