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ICL and Computer history

The aim of this section is give information on where to look for information on this subject, and also tell you about activities that you can get involved in.

The scope of the section ranges from general historical interest matters through to `proper history’ - as so defined by professional historians.

 

ICL History – How the company evolved - Charts

Over the years there have been a variety of ICL evolution charts, showing the original UK companies, and the computer systems that they produced.

We have obtained one such chart in electronic form for this website. Thanks to Virgilio Pasquali for this – it was originally produced for a seminar in 1996 on the 1900 series.

There is another chart – from the ICL Double Majority Association (DMA) - which has more tie in with events outside ICL and with the companies involved – and not so much on the computer systems. This chart is published in the members area, to view it use the link given in the DMA section.

There are other charts that were produced over the years within ICL. We would like to track down copies to publish (or to link to). Specifically we are looking for a poster produced by ICL in the 90’s, which also had photos.

 

ICL History – Books

The definitive work on the history of ICL is a book, which was commissioned by ICL, and written by a professional historian - Dr Martin Campbell-Kelly. The reference is:

ICL A Business and Technical History; M Campbell-Kelly; 1989; Oxford Clarendon Press, ISBN 0-19-853918-5

This was until recently out of print, but is now available again through the publisher’s `Print on demand’ service. We are discussing making this available to members at a discounted price – more tba.

Also if you have a copy of the book that you wish to dispose of (or sell) please contact the Pensioner Topics Editor.

 

The Computer Conservation Society (CCS)

Many former ICL staff take part in the activities of this society. Notable rebuild projects include the Manchester Baby (Chris Burton ) and the Bletchley Bombe (John Harper). There is a real working Pegasus in the London Science museum, which is looked after by members of the society.

See the CCS website at: http://www.bcs.org/sg/ccs/

There is an ongoing programme of meetings in London and in Manchester – good presentations and an opportunity to meet people interested in computer history.

Attendance at CCS meetings is open to all.

The CCS also publishes a bulletin for members, titled `Resurrection’. Many ICL people have contributed articles, on a wide range of topics. There are over 30 issues, and all can be viewed online (with patience, but work is in hand revamp the site – for now go to the CCS website as above, then to the site map, then scroll down and you will find `Resurrection’ under `More Information’).

The CCS is a specialist subgroup of the British Computer Society, in association with the London Science Museum and the Museum of Science and Industry in Manchester.

 

Our Computer Heritage

This is a project initiated by the CCS in 2003, to capture for posterity source information on the early UK computer systems, and to record that information in a database. It is a major undertaking, and has sections for each family of machines developed in Great Britain before 1970.

A one page description of this project is viewable at: http://www.ourcomputerheritage.org/

Several former ICL staff are prominent in this activity, specifically Virgilio Pasquali is looking after the 1900 section, and John Buckle looks after the Atlas section. The list of sections, and the coordinators for each, is given in a table at the end of this page – see below.

There is quite a lot of material which can be browsed on the initial (pilot study) database and website at: http://www. ourcomputerheritage.org/wp

Warning- be patient – this developing site is not very user friendly, but has some very interesting material on it.

Note that, for the 1900 Range, to make access more user friendly, the same information, in a more up-to-date form, is available at http://www. pasquali.org.uk/

This became necessary for the 1900 Range project to facilitate the large number of interactions, contributions and reviews from many ICL colleagues.

This is an evolving project, and you are welcome to contact the co-ordinators if you have material to add – see the list of co-ordinators below.

 

Early UK Computers - References and links

The aim is to give starting points for historical writeups on the major developments and manufacturers which merged into ICL. It is hoped that this section will be added to in time.

Early British Computers - early book by Simon Lavington

This book is available online by agreement with the author and copyright holder at:
http://ed-thelen.org/comp-hist/EarlyBritish.html
This book covers computers developed the period 1935 to 1955, and was first published in 1980 by Manchester University Press. It gives much information on these and also on slightly later machines.

Leo – the World’s First Business Computer

The history of Leo Computers is well documented, and is well worth looking at - much is available on the web. There is a `Leo Society’ which has an active website at:
http://www.leo-computers.org.uk/

A recent general historical and very readable book about Leo, and also about the UK computer industry world at the time, is :

A Computer Called LEO: Lyons Tea Shops and the World's First Office Computer; Georgina Ferry; IBSN 1-84115-185-8; 2003; HarperCollins Fourth Estate Hardback. A paperback edition also available at £7.99.

 

Notes on ICL history related writeups and events

This website is happy to publish material which is not available elsewhere, and that is of interest to ICL Group pensioners. The following section will contain history related material. If you wish to provide additional entries please contact the Pensioner Topics editor.

The list of notes is:

Sep 06 - Starting Work on the World's First Electronic Computer - 1952 Memories by Olaf Chedzoy (of the Tin Hut Reunion Group).
Jul 04 - 50 Years of Computer Payroll - Impressions from a Computer Conservation Society meeting in London on Thu 26th Feb 2004.

 

ICL Documentation Archive

Some of the ICL Company documentation has been stored. The original company history archive was transferred to the Science Museum . It is in storage, and work has been done to provide an on line index - thanks to Hamish Carmichael .

For a description of the Archive, and the index see the page on the CCS website at:

http://129.11. 152.25/iclarch/

If you wish to see a document that is in the archive, then arrangements can be made, and it facilitates that if you have some intention to add to the historical record – please contact the pensioner topics editor in the first instance, using contact.

There is also a national archive of the history of computing held at the Museum of Science and Technology in Manchester , which has many ICL documents – see

http://www.chstm.man.ac.uk/nahc/index.htm

 

Our Computer Heritage – list of machines and co-ordinators

If you wish you can contact one of the co-ordinators directly, or if you need their email address please contact the Pensioner Topics Editor.

Co-Ordinator and (group)

Computer

Date first working

Simon Lavington (E1)

Elliott 152

1950

 

Elliott Nicholas

1952

 

Elliott 153 (DF computer)

1954

 

Elliott/GCHQ OEDIPUS (311)

1954

David Pentecost (E2)

Elliott/NRDC 401

1953

 

Elliott 402

1955

 

Elliott 403 (WREDAC)

1956

 

Elliott 405

1956

Simon Lavington (E3)

Elliott 802

1958

 

Elliott 803

1959

 

Elliott ARCH 1000, etc.

1962

Simon Lavington (E4)

Elliott 503

1963

 

Elliott 502

1964

Terry Froggatt (E5)

Elliott 900 series

1963

Richard Overill (E6)

Elliott 4100 series

1966

 

Simon Lavington (F1)

Ferranti Mark I

1951

 

Ferranti Mark I Star

1953

John Gosling (F2)

Ferranti Mercury

1957

Chris Burton (F3)

Ferranti Pegasus

1956

 

Ferranti Perseus

1959

 

Ferranti Sirius

1961

Frank Taylor (F4)

Ferranti Orion 1 & 2

1963

John Buckle (F5)

Ferranti Atlas 1 & 2

1962

Peter Niblett (F6)

Ferranti Apollo

1961

 

Ferranti Poseidon

1962?

 

Ferranti Argus series

1963?

 

Ferranti Hermes

????

Tba (Leo L1 – L3)

LEO I

1951

 

LEO II

1957

 

LEO III

1962

 

TBA (EE N1- N4)

English Electric DEUCE

1955

 

English Electric KDN2, KDF7, KDF6

1962

 

English Electric KDP10

1962

 

English Electric KDF9

1963

 

Roger Johnson (T1)

BTM HEC

1953

 

BTM 1200 series

1956

Martin Wright (T2)

ICT 1300 series (GEC)

1961

 

ICT 558 FCC

1962

N/A – US Design (T3)

ICT 1500 (RCA 301)

1963?

N/A – US Design (T4)

ICT 1600 (RCA 3301)

?

Virgilio Pasquali (T5)

ICT 1900 series

1964