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    Alan Turing and his Contemporaries: Building the world's first computers
    Alan Turing and his Contemporaries: Building the world's first computers
    Alan Turing and his Contemporaries: Building the world's first computers
    Ebook213 pages2 hours

    Alan Turing and his Contemporaries: Building the world's first computers

    By Simon Lavington, Chris Burton, Martin Campbell-Kelly and Roger Johnson

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    About this ebook

    Secret wartime projects in code-breaking, radar and ballistics produced a wealth of ideas and technologies that kick-started the development of digital computers. This is the story of the people and projects that flourished in the post-war period.

    By 1955 computers had begun to appear in the market-place. The Information Age was dawning and Alan Turing and his contemporaries held centre stage. Their influence is still discernable deep down within today’s hardware and software.
    LanguageEnglish
    PublisherBCS, The Chartered Institute for IT
    Release dateFeb 11, 2012
    ISBN9781780171067
    Alan Turing and his Contemporaries: Building the world's first computers

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      Book preview

      Alan Turing and his Contemporaries - Simon Lavington

      BCS THE CHARTERED INSTITUTE FOR IT

      Our mission as BCS, The Chartered Institute for IT, is to enable the information society. We promote wider social and economic progress through the advancement of information technology science and practice. We bring together industry, academics, practitioners and government to share knowledge, promote new thinking, inform the design of new curricula, shape public policy and inform the public.

      Our vision is to be a world-class organisation for IT. Our 70,000-strong membership includes practitioners, businesses, academics and students in the UK and internationally. We deliver a range of professional development tools for practitioners and employees. A leading IT qualification body, we offer a range of widely recognised qualifications.

      Further Information

      BCS, The Chartered Institute for IT,

      First Floor, Block D,

      North Star House, North Star Avenue,

      Swindon, SN2 1FA, United Kingdom.

      T +44 (0) 1793 417 424

      F +44 (0) 1793 417 444

      www.bcs.org/contactus

      © 2012 British Informatics Society Limited

      All rights reserved. Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted by the Copyright Designs and Patents Act 1988, no part of this publication may be reproduced, stored or transmitted in any form or by any means, except with the prior permission in writing of the publisher, or in the case of reprographic reproduction, in accordance with the terms of the licences issued by the Copyright Licensing Agency. Enquiries for permission to reproduce material outside those terms should be directed to the publisher.

      All trade marks, registered names etc acknowledged in this publication are the property of their respective owners. BCS and the BCS logo are the registered trade marks of BCS, The Chartered Institute for IT charity number 292786 (BCS).

      Published by British Informatics Society Limited (BISL), a wholly owned subsidiary of BCS The Chartered Institute for IT First Floor, Block D, North Star House, North Star Avenue, Swindon, SN2 1FA, UK.

      www.bcs.org

      ISBN: 978-1-90612-490-8

      PDF ISBN: 978-1-78017-105-0

      ePUB ISBN: 978-1-78017-106-7

      Kindle ISBN: 978-1-78017-107-4

      British Cataloguing in Publication Data.

      A CIP catalogue record for this book is available at the British Library.

      Disclaimer:

      The views expressed in this book are of the author(s) and do not necessarily reflect the views of BCS or BISL except where explicitly stated as such. Although every care has been taken by the authors and BISL in the preparation of the publication, no warranty is given by the authors or BISL as publisher as to the accuracy or completeness of the information contained within it and neither the authors nor BISL shall be responsible or liable for any loss or damage whatsoever arising by virtue of such information or any instructions or advice contained within this publication or by any of the aforementioned.

      Typeset by Lapiz Digital Services, Chennai, India.

      Printed at CPI Antony Rowe Ltd, Chippenham, UK.

      CONTENTS

      APPENDIX A: TECHNICAL COMPARISON OF FIVE EARLY BRITISH COMPUTERS

      The Manchester Small-Scale Experimental Machine (SSEM), known as the ‘Baby’

      The Cambridge EDSAC

      The Ferranti Mark I’s instruction format

      Instruction format for the English Electric DEUCE

      APPENDIX B: TURING AND COMPUTING: A TIMELINE

      Alan Turing at NPL, 1945–8

      Alan Turing at Manchester, 1948–54

      APPENDIX C: FURTHER READING

      General accounts of the period 1945–60

      Chapter-specific books

      AUTHORS

      Christopher P Burton MSc, FIET, FBCS, CEng graduated in Electrical Engineering at the University of Birmingham. He worked on computer hardware, software and systems developments in Ferranti Ltd and then ICT and ICL, nearly always being based in the Manchester area, from 1957 until his retirement from the industry in 1989. He is a member of the Computer Conservation Society (CCS) and led the team that built a replica of the Manchester Small-Scale Experimental Machine (SSEM). Other roles in the CCS have included chairmanship of the Elliott 401 Project Group and of the Pegasus Project Group, and more recently investigating the feasibility of building a replica of the Cambridge EDSAC. For replicating the SSEM he was awarded an honorary degree by the University of Manchester, the first Lovelace Gold Medal by BCS, The Chartered Institute for IT, and a Chairman’s Gold Award for Excellence by ICL.

      Martin Campbell-Kelly is Emeritus Professor in the Department of Computer Science at the University of Warwick, where he specialises in the history of computing. His books include Computer: A History of the Information Machine, co-authored with William Aspray, From Airline Reservations to Sonic the Hedgehog: A History of the Software Industry, and ICL: A Business and Technical History. He is editor of The Collected Works of Charles Babbage. Professor Campbell-Kelly is a Fellow of BCS, The Chartered Institute for IT, visiting professor at Portsmouth University, and a columnist for the Communications of the ACM. He is a member of the ACM History Committee, a council member of the British Society for the History of Mathematics, and a committee member of the BCS Computer Conservation Society. He is a member of the editorial boards of the IEEE Annals of the History of Computing, the International Journal for the History of Engineering and Technology and the Rutherford Journal, and editor-in-chief of the Springer Series in the History of Computing.

      Roger Johnson is a Fellow of Birkbeck College, University of London, and Emeritus Reader in Computer Science. He has a BSc in Pure Mathematics and Statistics from the University College of Wales, Aberystwyth and a PhD in Computer Science from London University. He has researched and written extensively on a range of issues concerning the management of large databases. He worked previously at the University of Greenwich and at a leading UK software house. He was Chairman of the BCS Computer Conservation Society from 2003 to 2007 and has served on its committee since its founding. He has lectured and written about the history of computing, notably on the work of the UK pioneer, Andrew D Booth. He also co-authored the first academic paper on the history of the ready reckoner. He has been active in BCS, The Chartered Institute for IT for many years, serving as President in 1992–3 and holding a number of other senior offices. He has represented BCS for many years on international committees, becoming President of the Council of European Professional Informatics Societies (CEPIS) from 1997 to 1999. During his service with CEPIS he was closely involved in establishing the European Computer Driving Licence and the ECDL Foundation. He served as Honorary Secretary of the International Federation for Information Processing (IFIP) from 1999 to 2010. He is currently Chairman of IFIP’s International Professional Practice Programme (IP3) promoting professionalism in IT worldwide.

      Simon Lavington MSc, PhD, FIET, FBCS, CEng is Emeritus Professor of Computer Science at the University of Essex. He graduated in Electrical Engineering from Manchester University in 1962, where he remained as part of the Atlas and MU5 high-performance computer design teams until he moved to lead a systems architecture group at the University of Essex in 1986. From 1993 to 1998 he also coordinated an EPSRC specially promoted programme of research into Architectures for Integrated Knowledge-based Systems. Amongst his many publications are four books on computer history: History of Manchester Computers (1975), Early British Computers (1980), The Pegasus Story: a history of a vintage British computer (2000); and Moving Targets: Elliott-Automation and the dawn of the computer age in Britain, 1947–67 (2011). He retired in 2002 and is a committee member of the Computer Conservation Society.

      ACKNOWLEDGEMENTS

      The Computer Conservation Society is a member group of BCS, The Chartered Institute for IT. The authors wish to acknowledge the financial support of BCS in producing this book and the assistance of Matthew Flynn and the BCS Publications Department. We are grateful to Kevin Murrell, Secretary of the Computer Conservation Society, for arranging the photographs and credits.

      Picture credits

      Archant, Norfolk: P. 56 (top)

      Birmingham Museums Collection Centre: P. 66

      Bletchley Park Trust: P. 2 (bottom)

      Computer Laboratory, University of Cambridge: Pp. 21; 22 (top and bottom); 24; 27; 28; 29; 30 (top and bottom)

      Crown Copyright, with the kind permission, Director GCHQ: P. 2 (top)

      From author’s private collection (RJ): Pp. 60; 63; 64; 67

      From author’s private collection (MC-K): P. 54 (bottom)

      Elliott-Automation’s successors (BAE Systems and Telent plc): Pp. 48 (top, middle and bottom); 51 (top); 54 (top); 56 (bottom); 77

      Fujitsu plc.: P. 19 (top)

      IBM plc: P. 36 (bottom)

      LEO Society: P. 26

      Medical Research Council, Laboratory of Molecular Biology: P. 31

      National Physical Laboratory: P. 18 (top and bottom)

      Royal Society: P. 80

      School of Computer Science, University of Manchester: Pp. 34; 36 (top); 39 (top and bottom); 41; 42; 43; 44; 46; 51 (bottom)

      Science Museum, London: Front cover; P. 62

      St John’s College, University of Cambridge: Pp. 3; 5

      Twickenham Museum: P. 6

      PREFACE

      The years 1945–55 saw the emergence of a radically new kind of device: the high-speed stored-program digital computer. Secret wartime projects in areas such as code-breaking, radar and ballistics had produced a

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