Remembering LEO Frank Land
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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. -
David Hartley a Promise of Funding Has Been Received and an Outline Plan Including Cost Estimates and Timescales Has Been Drawn Up
Issue Number 54 Spring 2011 Computer Conservation Society Aims and objectives The Computer Conservation Society (CCS) is a co-operative venture between the British Computer Society (BCS), the Science Museum of London and the Museum of Science and Industry (MOSI) in Manchester. The CCS was constituted in September 1989 as a Specialist Group of the British Computer Society. It is thus covered by the Royal Charter and charitable status of the BCS. The aims of the CCS are: To promote the conservation of historic computers and to identify existing computers which may need to be archived in the future, To develop awareness of the importance of historic computers, To develop expertise in the conservation and restoration of historic computers, To represent the interests of Computer Conservation Society members with other bodies, To promote the study of historic computers, their use and the history of the computer industry, To publish information of relevance to these objectives for the information of Computer Conservation Society members and the wider public. Membership is open to anyone interested in computer conservation and the history of computing. The CCS is funded and supported by voluntary subscriptions from members, a grant from the BCS, fees from corporate membership, donations, and by the free use of the facilities of both museums. Some charges may be made for publications and attendance at seminars and conferences. There are a number of active Projects on specific computer restorations and early computer technologies and software. -
Computer Conservation Society
Issue Number 88 Winter 2019/20 Computer Conservation Society Aims and Objectives The Computer Conservation Society (CCS) is a co-operative venture between BCS, The Chartered Institute for IT; the Science Museum of London; and the Science and Industry Museum (SIM) in Manchester. The CCS was constituted in September 1989 as a Specialist Group of the British Computer Society. It is thus covered by the Royal Charter and charitable status of BCS. The objects of the Computer Conservation Society (“Society”) are: To promote the conservation, restoration and reconstruction of historic computing systems and to identify existing computing systems which may need to be archived in the future; To develop awareness of the importance of historic computing systems; To develop expertise in the conservation, restoration and reconstruction of historic computing systems; To represent the interests of the Society with other bodies; To promote the study of historic computing systems, their use and the history of the computer industry; To publish information of relevance to these objectives for the information of Society members and the wider public. Membership is open to anyone interested in computer conservation and the history of computing. The CCS is funded and supported by a grant from BCS and from donations. There are a number of active projects on specific computer restorations and early computer technologies and software. Younger people are especially encouraged to take part in order to achieve skills transfer. The CCS also enjoys a close relationship with the National Museum of Computing. Resurrection The Journal of the Computer Conservation Society ISSN 0958-7403 Number 88 Winter 2019/20 Contents Society Activity 2 News Round-Up 9 The Data Curator 10 Paul Cockshott From Tea Shops to Computer Company: The Improbable 15 Story of LEO John Aeberhard Book Review: Early Computing in Britain Ferranti Ltd. -
Please Note That Copyright in This Article Has Been Transferred to the IEEE for the Purposes of Publication
Please note that copyright in this article has been transferred to the IEEE for the purposes of publication. This version is a preprint of the article as submitted for publication. The First Computer in New Zealand Brian E. Carpenter The University of Auckland ________________________________________________________________________________ Abstract Dainty.2 However, the workload for these machines was constantly increasing. When How quickly did the computer revolution reach the electronic computers capable of handling punched most remote Westernised country? Conventional cards became commercially available in the late history holds that the first modern computer in 1950s, they were of immediate interest to the New Zealand – where ‘modern’ means electronic, Treasury in particular. Treasury installed its first and with stored programs – was an IBM 650 computer, an IBM 650, in 1960 and this is leased from IBM Australia by the New Zealand normally recognized as the first modern computer Treasury in November 1960, and officially in New Zealand. However, there is an alternative inaugurated in March 1961. This paper discusses contender. an alternative hypothesis – that the pioneer was in fact an ICT 1201 ordered in 1959 and installed by the New Zealand Department of Education a few The Conventional History months before the arrival of the IBM 650. The historical record for the IBM 650 is quite clear. According to A.C. Shailes, who was New Keywords: History, Government, Computers, New Zealand’s Controller and Auditor-General from Zealand 1975 to 1983, but an ordinary Treasury official at the relevant time, IBM Australia proposed the Introduction lease of an IBM 650 to the New Zealand Treasury The modern computer age was announced to New in 1957.3 This was a safe choice; well before 1960, Zealand almost as soon as it began. -
P the Pioneers and Their Computers
The Videotape Sources: The Pioneers and their Computers • Lectures at The Compp,uter Museum, Marlboro, MA, September 1979-1983 • Goal: Capture data at the source • The first 4: Atanasoff (ABC), Zuse, Hopper (IBM/Harvard), Grosch (IBM), Stibitz (BTL) • Flowers (Colossus) • ENIAC: Eckert, Mauchley, Burks • Wilkes (EDSAC … LEO), Edwards (Manchester), Wilkinson (NPL ACE), Huskey (SWAC), Rajchman (IAS), Forrester (MIT) What did it feel like then? • What were th e comput ers? • Why did their inventors build them? • What materials (technology) did they build from? • What were their speed and memory size specs? • How did they work? • How were they used or programmed? • What were they used for? • What did each contribute to future computing? • What were the by-products? and alumni/ae? The “classic” five boxes of a stored ppgrogram dig ital comp uter Memory M Central Input Output Control I O CC Central Arithmetic CA How was programming done before programming languages and O/Ss? • ENIAC was programmed by routing control pulse cables f ormi ng th e “ program count er” • Clippinger and von Neumann made “function codes” for the tables of ENIAC • Kilburn at Manchester ran the first 17 word program • Wilkes, Wheeler, and Gill wrote the first book on programmiidbBbbIiSiing, reprinted by Babbage Institute Series • Parallel versus Serial • Pre-programming languages and operating systems • Big idea: compatibility for program investment – EDSAC was transferred to Leo – The IAS Computers built at Universities Time Line of First Computers Year 1935 1940 1945 1950 1955 ••••• BTL ---------o o o o Zuse ----------------o Atanasoff ------------------o IBM ASCC,SSEC ------------o-----------o >CPC ENIAC ?--------------o EDVAC s------------------o UNIVAC I IAS --?s------------o Colossus -------?---?----o Manchester ?--------o ?>Ferranti EDSAC ?-----------o ?>Leo ACE ?--------------o ?>DEUCE Whirl wi nd SEAC & SWAC ENIAC Project Time Line & Descendants IBM 701, Philco S2000, ERA.. -
A Historical Perspective of the Development of British Computer Manufacturers with Particular Reference to Staffordshire
A historical perspective of the development of British computer manufacturers with particular reference to Staffordshire John Wilcock School of Computing, Staffordshire University Abstract Beginning in the early years of the 20th Century, the report summarises the activities within the English Electric and ICT groups of computer manufacturers, and their constituent groups and successor companies, culminating with the formation of ICL and its successors STC-ICL and Fujitsu-ICL. Particular reference is made to developments within the county of Staffordshire, and to the influence which these companies have had on the teaching of computing at Staffordshire University and its predecessors. 1. After the second world war In Britain several computer research teams were formed in the late 1940s, which concentrated on computer storage techniques. At the University of Manchester, Williams and Kilburn developed the “Williams Tube Store”, which stored binary numbers as electrostatic charges on the inside face of a cathode ray tube. The Manchester University Mark I, Mark II (Mercury 1954) and Atlas (1960) computers were all built and marketed by Ferranti at West Gorton. At Birkbeck College, University of London, an early form of magnetic storage, the “Birkbeck Drum” was constructed. The pedigree of the computers constructed in Staffordshire begins with the story of the EDSAC first generation machine. At the University of Cambridge binary pulses were stored by ultrasound in 2m long columns of mercury, known as tanks, each tank storing 16 words of 35 bits, taking typically 32ms to circulate. Programmers needed to know not only where their data were stored, but when they were available at the top of the delay lines. -
Resurrection
Issue Number 10 Summer 1994 Computer Conservation Society Aims and objectives The Computer Conservation Society (CCS) is a co-operative venture between the British Computer Society and the Science Museum of London. The CCS was constituted in September 1989 as a Specialist Group of the British Computer Society (BCS). It thus is covered by the Royal Charter and charitable status of the BCS. The aims of the CCS are to o Promote the conservation of historic computers o Develop awareness of the importance of historic computers o Encourage research on historic computers Membership is open to anyone interested in computer conservation and the history of computing. The CCS is funded and supported by a grant from the BCS, fees from corporate membership, donations, and by the free use of Science Museum facilities. Membership is free but some charges may be made for publications and attendance at seminars and conferences. There are a number of active Working Parties on specific computer restorations and early computer technologies and software. Younger people are especially encouraged to take part in order to achieve skills transfer. The corporate members who are supporting the Society are Bull HN Information Systems, Digital Equipment, ICL, Unisys and Vaughan Systems. Resurrection The Bulletin of the Computer Conservation Society ISSN 0958 - 7403 Number 10 Summer 1994 Contents Society News Tony Sale, Secretary 2 Evolution of the Ace drum system Fred Osborne 3 Memories of the Manchester Mark I Frank Sumner 9 Ferranti in the 1950s Charlie Portman 14 Very early computer music Donald Davies 19 Obituary: John Gray Doron Swade 21 Book Review - the Leo story 22 Letters to the Editor 24 Letters Extra - on identifying Pegasi 27 Working Party Reports 29 Forthcoming Events 32 Society News Tony Sale, Secretary Things have been progressing well for the Society at Bletchley Park. -
Another ICL Anthology
Foreword On June 21st 1948 Tom Kilburn ran a program on the first electronically stored program computer in the world. Freddy Williams and Tom had been struggling for some time to make their cathode ray tube store work. Demonstrating the store was the key thing, for without a store the computer as we know it today could never be. This simple machine, always known as the 'BABY', was developed into the Ferranti Mark 1, the first computer to go on commercial sale anywhere in the world. Tom's program was the first program to be written and run. Some of us here in Manchester felt that the fiftieth anniversary of such stupendous achievements should not go unnoticed. So at 11 a.m. on June 21st 1998, fifty years to the dot later, Tom ran that same program again on a reconstructed BABY that had earlier been ceremonially switched on by the widow of Freddy Williams. A team of enthusiasts, almost all members or retired members of ICL, researched the design and built the machine from genuine 1940s components. This would not have been possible without the usual ICL drive and enthusiasm, typified at the personal level by Chris Burton (ex- ICL West Gorton) who led the team, and marked at the corporate level by sponsorship of the project. Anyone interested can now see BABY at the Museum of Science and Industry in Manchester. Tom Kilburn says that it looks exactly like the original - except that it's cleaner. I mention this story because it illustrates vividly what has happened to our industry over fifty years. -
The Women of ENIAC
The Women of ENIAC W. BARKLEY FRITZ A group of young women college graduates involved with the EFJIAC are identified. As a result of their education, intelligence, as well as their being at the right place and at the right time, these young women were able to per- form important computer work. Many learned to use effectively “the machine that changed the world to assist in solving some of the important scientific problems of the time. Ten of them report on their background and experi- ences. It is now appropriate that these women be given recognition for what they did as ‘pioneers” of the Age of Computing. introduction any young women college graduates were involved in ties of some 50 years ago, you will note some minor inconsiskn- NI[ various ways with ENIAC (Electronic Numerical Integra- cies, which arc to be expected. In order to preserve the candor and tor And Computer) during the 1942-195.5 period covering enthusiasm of these women for what they did and also to provide ENIAC’s pre-development, development, and 10-year period of today’s reader and those of future generations with their First-hand its operational usage. ENIAC, as is well-known, was the first accounts, I have attempted to resolve only the more serious incon- general purpose electronic digital computer to be designed, built, sistencies. Each of the individuals quoted, however, has been and successfully used. After its initial use for the Manhattan Proj- given an opportunity to see the remarks of their colleagues and to ect in the fall of 194.5 and its public demonstration in February modify their own as desired. -
Company Histories
British companies delivering digital computers in the period 1950 – 1965. Elliott Brothers (London) Ltd. and Elliott-Automation. The Elliott Instrument Company was founded in 1804. By the 1870s, telegraph equipment and electrical equipment were added to the company’s products. Naval instrumentation became an area of increasing importance from about 1900, the company working with the Admiralty to develop Fire Control (ie gunnery control) electro-mechanical analogue computers. Elliott Brothers (London) Ltd. provided fire-control equipment to the Royal Navy from 1908 until shortly after the end of the Second World War. By 1946 the company’s main factory at Lewisham in south London had become a technological backwater. Although still skilled in manufacturing electro-mechanical equipment and precision electrical instrumentation, it had been bypassed by the huge war- time flow of government contracts for radar and allied electronic equipment. Compared with firms such as Ferranti Ltd., there was practically no electronic activity at Elliott’s Lewisham factory. The company actually traded at a loss between 1946 and 1951. Somewhat surprisingly, fresh discussions between the Admiralty and Elliott Brothers (London) Ltd. started in 1946, with the objective of persuading the company to host a new research team whose prime objective was to work on an advanced digital electronic Fire Control system and target-tracking radar. The Admiralty leased to the company a redundant factory at Borehamwood in Hertfordshire. This became known as Elliott’s Borehamwood Research Laboratory. It was at Borehamwood that a team of specially- recruited young scientists and engineers designed and built several secret digital computers for various classified projects. -
Science Museum Library and Archives Science Museum at Wroughton Hackpen Lane Wroughton Swindon SN4 9NS
Science Museum Library and Archives Science Museum at Wroughton Hackpen Lane Wroughton Swindon SN4 9NS Telephone: 01793 846222 Email: [email protected] LAV/1/1/UK2 Material relating to English Electric computers Compiled by Professor Simon Lavington LAV/1/1/UK2 April 1959 Programming Buff- bound foolscap typed manual for the document, approximately computer 200 pages. This manual DEUCE. RAE given to SHL by John Farnborough, Coales, November 1999. Tech Note MS38. D G Burnett-Hall & P A Samet c. 1995 & Notes on Four pages of notes, 2007 probable provenance Keith Titmuss, deliveries of Kohn Barrett, Jeremy EE DEUCE Walker & David Leigh. (For a corrected list, see the Our Computer Heritage website. 1999 P J Walker’s Jeremy Walker retired from notes on KDF ICL Kidsgrove in 1991. He 6, KDF7, KDF8 worked on the KDP10 at and KDP10. English Electric Kidsgrove in 1961. 1999 George Vale’s George was involved in the notes on KDN2, specification of the KDF7 and M2140, a 16-bit process M2140. control computer whose design was begun in about 1966. GEC scrapped the project in 1966 although by then ‘quite a number had been sold’ and installations continued up to about 1973. c. 1959 KDP10: a 6 page illustrated glossy decisive brochure, EE publication advance in ES/202. automatic data processing. C. 1961 KDF9: very 30 page illustrated glossy high speed brochure, EE publication data DP/103. Also, a photocopy processing of this. system for commerce, industry, science. c. 1965 KDF9 Undated publication programming 1002mm/1000166, produced manual by English Electric-Leo- Marconi. -
Lac-TM-544-B PUB DATE Km:: BO GRANT :1=7-G-7B-0043 NOTE 3:24:; Figure
DOCUMEr7 RESUHE ED 202 095 EA 013 AUTHOR Lambright, N.Benty; And Othe.s TITLE 1.:lucational InnoY7ation as a F 3cess of :alition-Buildi=7:. A Study Organilt_:=.2. Decision-,Making., Tolume 3e Studies Educational InncTations in '\E:, ester L..z.d York. INSTITUTION S-Frracuse Researcn Corp., Sy=:,z;:se, N.Y. -SPONS AGENC: la:zional Inst. of Education (4ash:.agtora, D.C. REPORT NO :lac-TM-544-B PUB DATE km:: BO GRANT :1=7-G-7B-0043 NOTE 3:24:; Figure. 3 and:occasiol. appen:Aces may remroduce poorly. For a accument,see TA 01Z EDRS PRICE . I201/PC13 Plus Postage. DESCRIPTORS Ldministrative Organization Cam:, _zsisted Instruction;,CompuLer Instructi.:n; :ommuter Oriented Programs; *Decisicr. l_sabilities; Educational Comple;:es Innovation; Elementary Secondar= Exceptional Persois; Free Choice 2-a ::en Progrs: House Plan; Informal OrTanizatio:._: .L.aamrAtocy .7ohools; Magnet Schools; Mainst-zei.,4-z..---c;MatIzgeme=t :nformation Systems; *OrgtmizatioL4.._ -reaopient; kOrzanizational EffectiveLess; 2ara:r.ofessz.nral School Personnel; Power Structui-e: R. IElarc-E; 0School Districts; Special 'Education: i:tudemt Lachatge Programs IDENTIFIERS 1.-fducation for A21 Handicapped Childrea ict: Project luzigue; *Rochester City School .7,;.s.-;==t 'L4 *Syracuse 2.-Lty Schools NY; UrbaniSliburhian Interiztztriz:t 1.-L-ansfer Program ABSTRACT fzis document contains/the full texl_ of te. ca-Li_ studies prepared b,- the Syracuse Research Corpocati-7_ 5o= _J:s 1,11:,:pose. of examining the c7.ganizational processes involved :...at.,-ffetz.ve educational innolion at the school didtrict level- ;no ;e. in two urban distri:Ts were examined. In th Syracuse City 3cLc;3_ District these inaovations involved the oliowing: resco.e.af, t- the need for educatira children with hAndicap ing condition z, .z_-;:.