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The UK tobacco company Wills operated a KDF9. It and its operator Ken Somers featured in a press ad campaign showing various Wills employees at work. The first appearance I have noted for Ken is the Observer colour supplement 21 November 1965. The computer is 'six months old' 'and can read and write 200,000 characters a second and print at a rate of 2,000 lines a minute'.Adamsez (talk) 06:32, 13 July 2013 (UTC)
These specifications in the newspaper are wrong, needless to say, as is easily verifiable in the main article references. — Preceding unsigned comment added by 212.159.101.165 (talk) 03:18, 13 February 2014 (UTC)
It would be nice to list where the 29 machines were installed. — Preceding unsigned comment added by 147.147.121.239 (talk) 10:04, 28 April 2018 (UTC)
See: <http://www.ourcomputerheritage.org/ccs-n2x1.pdf>
The Leeds University KDF9 certainly wasn't housed in a converted chapel when I was there 1970-73, it was in the very modern computing and physics building. I always thought the Eldon operating system was named after the near-by Eldon pub.86.145.211.32 (talk) 09:06, 24 January 2019 (UTC)
It was when Eldon was conceived: "So we ploughed our own furrow. The earlier experiments had been called Eldon both as a joke because of the similarity to EGDON and in recognition of the fact that the Leeds KDF9 had originally been housed in a disused chapel, called Eldon Chapel. There was also a nearby pub called Eldon. So our new venture was called Eldon 2." See: <http://www.computerconservationsociety.org/resurrection/res49.htm#e>
The article says that the KDF9 used 2000 toroid pulse transformers (magnetic amplifiers). Is there a reliable source that the KDF9 used magnetic amplifiers? (Pulse transformers and magnetic amplifiers are different.) The given link says that it used transformer-couple diode-transistor logic, but doesn't mention magnetic amplifiers. One source says that the KDF9 used pulse transformers to store the microprogram, which sounds a lot like IBM's Transformer read-only storage, but this is different from a magnetic amplifier. KenShirriff (talk) 00:34, 18 April 2021 (UTC)
There's no obvious reason in the article for the 'see also' of Reverse Polish. Why's it there? Lovingboth (talk) 16:53, 25 September 2023 (UTC)