Douglas was born on 21 May 1921 in London. At age eight, his family moved to Cromwell Road, near what would become the London Air Terminal.
A 74 bus ride for one old penny took me to Exhibition Road, from which I could go towards South Kensington station to my father's office and workshop down by what became the Lycée Français. Alternatively, I could turn north to the Science Museum – a trip I took often.
In the winter of 1938–39, Douglas and his future wife Andrey Parker made a snowman in the grounds of the Natural History Museum. Douglas and his wife would go on to have two children and at least two grandsons. During the Blitz, in 1940–41, Douglas's Home Guard Unit, 'C' Company of the Chelsea and Kensington Battalion of the KRRC, had its headquarters in the basement of the Royal School of Mines, just the other side of Exhibition Road from the museums. He appeared to commission into the Corps of Royal Engineers on 7 March 1943 as a second lieutenant, but this was later corrected to show that he actually commissioned into the Royal Corps of Signals.
Cambridge
Douglas attended the University of Cambridge in 1950. In 1952, while working towards earning his PhD, he wrote a thesis which focused on human-computer interactions and he needed an example to prove his theories. At that time, Cambridge was home to the second stored-program computer, the EDSAC or Electronic Delay Storage Automatic Calculator. This gave Douglas the opportunity to prove his findings by programming the code for a simple game where a player can compete against the computer – OXO.
1953–1957 1953: Elected as a Prize Fellow of Trinity College, Cambridge, Douglas spends a year at the University of Illinois Computation laboratory as assistant Professor. 1955: Became Junior Bursar of Trinity College. The Junior Bursar is responsible for the administration of the College buildings: allocation of accommodation, building works, security, staff, and general maintenance
Leeds
1957: The Leeds Pegasus computer was installed in autumn 1957 in the Eldon Chapel on Woodhouse Lane. Douglas set up the Computer Laboratory of the University of Leeds, and it was there that he first became interested in the application of computers to business problems
The Pegasus holds an especial place in my affection, it being the machine I installed as the central University machine in a disused chapel in Leeds in 1957 – it was known as Lucifer, for Leeds University Computing Installation. Our au pair girl from Spain made a beautiful little devilish doll which decorated the machine – it has probably disappeared by now.
In June 1960 the Committee of Vice-Chancellors and Principals set up a Working Party to explore the creation of a national system for handling university admissions. Douglas was appointed a member of the Working Party to provide advice on the use of computers in this system. He had previously worked at Leeds with Ronald Kay, who was to become UCCA's general secretary, on "an early and primitive but successful attempt to introduce computer methods into student registration procedures".
CEIR
1960: Entered the commercial field as Technical Director of the UK subsidiary of C-E-I-R.
Leasco
1968: Left CEIR to initiate the European software interests of Leasco Systems and Research Ltd. as chairman. Douglas died in sleep on 29 April 2010 from pneumonia.
Writings
Over 60 papers have been published by Professor Douglas covering topics in Atomic Physics, Crystallography, Solution of Differential Equations, Computer Design, Programming and Operational Research in the Shipbuilding, Oil Chemical Mining, Engineering and Transportation Industries, and in the Printing Industry.
