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Thoughts, lessons and anecdotes from over fifty years as a 
database teacher, writer, and researcher
Chris Date LCS member and LEO Computers Employee in 1962
 
Zoom forum June 18th 2025 at 17.00 BST
 
Hosted by the LEO Computers Society, and with the invitation extended to anyone interested in the history of Information Technology

About Chris Date:

Chris is an independent author, lecturer, researcher, and consultant specialising in relational database systems.  He was one of the first persons anywhere to recognise the fundamental importance of Ted Codd’s pioneering work on the relational model.  He was also involved in technical planning for the IBM products SQL/DS and DB2 at the IBM Santa Teresa Laboratory in San Jose, California. 
 
He is best known for his books, in particular An Introduction to Database Systems, 8th Edition (Addison-Wesley, 2004), the standard text in the field, which has sold around a million copies worldwide.  He enjoys a reputation that is second to none for his ability to explain complex technical material in a clear and understandable fashion.

The LEO Computer Society  is inviting you to a scheduled Zoom meeting.

Topic: Chris Date
Time: Jun 18, 2025 05:00 PM London
Join Zoom Meeting
https://us02web.zoom.us/j/84166245503?pwd=mKSgTtWRSEV7ls89pk2ZHvkEHgAuxZ.1

Meeting ID: 841 6624 5503
Passcode: 240727

Find your local number: https://us02web.zoom.us/u/kc4lPMoFqn

Chris Date -Zoom forum June 18th 2025 at 17.00 BST Read More »

Kate will be working on the LEO archive at CCH – following on the excellent work carried out as part of the NLHF project by Jude Brimmer and Luke Thorne. This new post has been generously funded by the AIT Trust and is named in honour of Frank and Ralph Land, key figures in the development and marketing of LEO from its earliest days. Kate will be working three days a week, Wednesday to Friday for two years. 

Kate shows enormous enthusiasm for archiving work, and has recent highly-praised experience in projects at several Cambridge colleges on a variety of themes. We will ask her to introduce herself to you all in the near future.

Kate Stockwell appointed as Land Archivist Read More »

Andrew Herbert, is a distinguished Computer Science practitioner who hails from the Cambridge Tradition. Having held a very senior position in Microsoft Research, in retirement he is the leader of the project on display at TNMoC to construct a replica of the pioneering EDSAC I computer at the University of Cambridge which first went into service in 1949.

On 26 April 2024 Andre spoke to the LEO Computer Society on Zoom  about the reconstruction project , now close to completion.  He spoke of the challenges of reconstructing a machine for which there were very few surviving circuit diagrams – the EDSAC reconstruction team worked mostly from contemporary photographs and secondary sources and research into established circuits for “computing with waveforms” known to 1940s electronics engineers.

A recording is available here Zoom Recording

Copy of the slides used can be found here Slides

 

 

Rebuild of EDSAC at TNMoC: Presented by Andrew Herbert Read More »

Over time there have been a number of programmes on the BBC Radio which have talked about LEO. Neville Lyons put together material extracted from the BBC programmes together with relevant Slides to provide visual content and this was presented on 12 December 2023. A recording is available here Zoom Recording

To listen to the original BBC material without the slides you can follow the links below.

LEO the Electronic Office from BBC Radio 4 Computing Britain

LEO BBC Radio 4 Extra

LEO Making History BBC Radio 5 Live Outriders

LEO on the Radio Read More »

The LEO Computers Society and the Centre for Computing History have been awarded “Highly Commended” in the UK IT Industry awards for 2023., charities sector.

IT Industry awards 2023

John Paschoud, Vince Bodsworth, Peter Byford and Bernard Behr attended the Black tie event on November 8th at the Evolution Centre in Battersea Park

UK IT Industry Award 2023 Read More »

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