Articles

You can read the article at ITNOW Volume 66 in the event there is a paywall there is a brief summary below as well as the original Press Release.

A project celebrating the world’s first business computer took a highly commended second place in the BCS IT Industry Awards’ charities category. The project explores the Lyons Electronic Office (LEO) — a machine remembered as the world’s first business computer and that, more importantly, kept tea and cake flowing across the UK during the early 20th century.
Backed by the National Lottery and produced jointly by the Leo Conservation Society and the Cambridge Located Centre for Computing History, Virtual LEO 1 brings to life the original LEO computer. See more about Virtual LEO I here
The article additionally notes the short documentory film telling the LEO story produced as part of the project  and available for public viewing on You Tube, and itself an award winner Viewable Here
The original Press release is on the LCS Website Here

Copyright © 2024 LEOPEDIA

Cooper, M, MBCS: Baking the First Business Computer, ITNOW, Volume 66, Issue 1, Spring 2024 Read More »

At a meeting held annually to reward achievements in the IT industry the LEO Computers Society (LCS) and the Centre for Computing History (CCH) were awarded 2nd place (‘Highly Commended’) in the charities category of the BCS’s UK IT awards. This was for the successful Virtual LEO l application.

Published in the Computer Conservation Society Issue 104 Spring 2024
The Original Press release can be viewed Here

Copyright © 2024 LEOPEDIA

McGerty, Dr Lisa, and Byford, Peter – A Virtual Experience of LEO I Published in Resurrection the Journal of the Computer Conservation Society Read More »

Billy Dalziel of the Corby Heritage centre gave a presentation about Stewart and Lloyds and the LEO II installed at the Corby Steelworks. The presentation was on 05 May 2023 and can be viewed at the LEO Computer Society Website The presentation is rich in the industrial heritage of the UK and Corby in particular, with photos of the town and smokey steel works. Billy also tells the story of the eventual replacement of the LEO II, by an IBM 360, on the pretext that they needed to do it to handle decimalisation as LEO couldn’t.

Billy Dalziel and Corby Steelworks LEO II: Read More »

Speaker:David Holdsworth
Date:Tue 23rd Jan 2024
Time:17:00 for 17:30
Location:Manchester Metropolitan University. John Dalton Building, Room E0.05
This talk describes how someone completely unfamiliar with Leo III converted assembly language printer listings into working code, with the help of volunteers from the Leo Society. As well as describing techniques, there will be description of the surprises along the way. To today’s eyes the Leo III has some very odd features, and a few blind spots.

David Holdsworth – The Leo III Reloaded: Read More »

IN AT THE START OF BUSINESS COMPUTING 
What was it really like to be in at the start of business computing, to attempt what no-one had done before, to develop totally new ways of processing and managing data that would eventually completely change the way business operates across the world?
A flavour of what it felt like can be had from the reminiscences of over 80 people who variously worked on LEO (Lyons Electronic Office), the world’s first computer to run business applications, and its successor machines, now being published as a book this month (28 September). Coming out strongly through the book, “LEO remembered,” is the shared excitement from those involved – designers, engineers, programmers, operators and sales people alike – in knowing that they were onto something big.
Noting this, the book’s joint editors, Hilary Caminer and Lisa McGerty, comment: “First hand testimony takes us to the heart of the day-to-day routine, the frustrating task of locating and mending hardware and software faults, the camaraderie built from working together on never-before-tackled systems and programming problems, the ethos that LEO instilled and that stayed with its people in their later, often very distinguished careers.”

LEO story

The LEO story began in 1947 when the board of the large J. Lyons & Co catering group, then under the threat of being swamped by paperwork, stumped up the princely sum of £3000 (£83,000 in today’s money) to help fund the completion of Cambridge University’s large scientific computer known as EDSAC. Once it was working, Lyons adapted EDSAC to become LEO for the very different needs of business where relatively straightforward calculations, but in much larger volumes, were involved.

This was in no way a straightforward task. Frank Land, one of the ground-floor LEO pioneers, commented: “What is not generally appreciated, and is part of the remarkable story that unfolded, is that Lyons, famed for baking bread and feeding people, actually built the computer using their own resources on site at their Cadby Hall headquarters”.

The bold decision by the Lyons board bore fruit when, in November 1951, just over 70 years ago, the resulting LEO ran its first live business application, a bakeries valuation job, the first in the world to do so. Lyons retained this lead through most of the 1950s and early 1960s, setting up a company, LEO Computers Ltd, to develop and sell computers at home and overseas before eventually merging with International Computers and Tabulators (ICT) in a final fling for the British computer industry.

The LEO story ended in 1981 when the last of the LEO computers, a LEO 326, one of a large number operated by the Post Office for telephone billing, was finally turned off, the same year coincidentally when the last of the Joe Lyons famous teashops closed its doors.

 ‘LEO remembered’ is published, with financial support from the AIT Trust, by the charities LEO Computers Society and the Centre for Computing History, based in Cambridge. It has a foreword by Dame Stephanie Shirley CH and an introduction by Professor Frank Land OBE.

The book is available, priced £8 plus postage, from LEOremembered@leo-computers.org.uk

Frank Land

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Frank Land, now in his nineties, an early LEO programmer, with the new book, “LEO remembered.” He led the LEO company’s early sales and systems consultancy team for 15 years and then took his experience in another direction into academic research and education.

1. The LEO Computers Society is committed to promoting and protecting LEO’s history. Membership of the Society is open to all ex-employees of LEO Computers and its succeeding companies, anyone who worked with a LEO computer and anyone with a specific interest in the history of LEO Computers. Among its members are pioneers from the very early days of computing and membership is currently free of charge. Visitwww.leo-computers.org.uk. Follow @leocomputers51.

2.. Established in 2006, the Centre for Computing History is a charitable heritage organisation with a strong focus on learning. Since opening in Cambridge in August 2013, the Centre has helped people understand how tech has shaped the modern world and revolutionised the way we live, work and play through interactive displays and exhibitions, our schools programme, learning events workshops, and an astonishing collection of computers old and new. Visit www.computinghistory.org.uk. Follow @computermuseum

Aeberhard, J (2022) LEO Remembered published 28thSeptember 2022 – Press Release. Read More »