@prefix rdf: . @prefix dbpedia: . @prefix ns2: . dbpedia:Donald_Davies rdf:type ns2:RecreationalCryptographers , ns2:BritishComputerScientists , ns2:FellowsOfTheRoyalSociety , ns2:ComputerPioneers , ns2:CommandersOfTheOrderOfTheBritishEmpire , ns2:AlumniOfImperialCollegeLondon . @prefix owl: . dbpedia:Donald_Davies rdf:type owl:Thing . @prefix dbpedia-owl: . dbpedia:Donald_Davies rdf:type dbpedia-owl:Scientist , dbpedia-owl:Person . @prefix dbpprop: . dbpedia:Donald_Davies dbpprop:name "Donald Watts Davies"@en . @prefix xsd: . @prefix ns7: . dbpedia:Donald_Davies ns7:birthDate "1924-06-07"^^xsd:date ; ns7:birthPlace dbpedia:Wales , dbpedia:Treorchy ; ns7:deathDate "2000-05-28"^^xsd:date ; ns7:almaMater dbpedia:Imperial_College_London ; owl:sameAs , . @prefix ns8: . dbpedia:Donald_Davies owl:sameAs ns8:Donald_Davies . @prefix foaf: . dbpedia:Donald_Davies foaf:name "Donald Watts Davies" . @prefix ns10: . dbpedia:Donald_Davies foaf:page ns10:Donald_Davies ; dbpedia-owl:knownFor dbpedia:Packet_switching ; ns7:knownFor dbpedia:Packet_switching ; dbpprop:reference , , , , , , , , . @prefix rdfs: . dbpedia:Donald_Davies rdfs:label "Donald Davies"@fr , "Donald Davies"@en , "Donald W. Davies"@no , "Donald Watts Davies"@de ; dbpedia-owl:birthDate "1924-06-07"^^xsd:date ; dbpedia-owl:birthPlace dbpedia:Wales , dbpedia:Treorchy ; dbpedia-owl:deathDate "2000-05-28"^^xsd:date ; dbpedia-owl:almaMater dbpedia:Imperial_College_London ; dbpprop:abstract "Donald Watts Davies, CBE FRS was a Welsh computer scientist who was a co-inventor of packet switching (and originator of the term), along with Paul Baran in the US. Davies was born in Treorchy in the Rhondda Valley, Wales. His father, a clerk at a coalmine, died a few months later, and his mother took Donald and his twin sister back to her home town of Portsmouth, where he went to school. He received a BSc degree in physics (1943) at Imperial College London, and then joined the war effort working as an assistant to Klaus Fuchs. on the nuclear weapons Tube Alloys project at Birmingham University. He then returned to Imperial taking a first class degree in mathematics (1947); he was also awarded the Lubbock memorial Prize as the outstanding mathematician of his year. In 1955, he married Diane Burton. From 1947, he worked at the National Physical Laboratory where Alan Turing was designing the Automatic Computing Engine (ACE) computer. It is said that Davies spotted mistakes in Turing's seminal 1936 paper On Computable Numbers, much to Turing's annoyance. These were perhaps some of the first \"programming\" errors in existence, even if they were for a theoretical computer, the universal Turing machine. The ACE project was overambitious and foundered, leading to Turing's departure . Davies took the project over and concentrated on delivering the less ambitious Pilot ACE computer, which first worked in May 1950. A commercial spin-off, DEUCE was manufactured by English Electric Computers and became one of the best-selling machines of the 1950s. Davies then worked for a while on applications such as traffic simulation and machine translation. In the early 1960s, he worked on Government technology initiatives designed to stimulate the British computer industry. In 1966 he returned to the NPL at Teddington just outside London, where he headed and transformed its computing activity. He became interested in data communications following a visit to the Massachusetts Institute of Technology, where he saw that a significant problem with the new time-sharing computer systems was the cost of keeping a phone connection open for each user. He first presented his ideas on packet switching at a conference in Edinburgh on 5 August 1968. In 1970, Davies helped build a packet switched network called the Mark I to serve the NPL in the UK. It was replaced with the Mark II in 1973, and remained in operation until 1986, influencing other research in the UK and Europe. Larry Roberts of the Advanced Research Projects Agency in the United States became aware of the idea, and built it into the Arpanet, which evolved into the Internet. Davies relinquished his management responsibilities in 1979 to return to research. He became particularly interested in computer network security. He retired from the NPL in 1984, becoming a security consultant to the banking industry. Davies was appointed a Distinguished Fellow of the British Computer Society in 1975, a CBE in 1983 and a Fellow of the Royal Society in 1987."@en , "Donald Watts Davies, CBE FRS \u00E9tait un informaticien, un physicien et un math\u00E9maticien gallois qui a co-invent\u00E9 avec Paul Baran la commutation de paquets."@fr , "Donald Watts Davies var en walisisk vitenskapsmann innen informatikk som, sammen med Paul Baran og Leonard Kleinrock, var med p\u00E5 \u00E5 finne opp pakkesvitsjing for datanettverk."@no , "Donald Watts Davies war Physiker und einer der Pioniere der Informationstechnologie."@de ; rdfs:comment "Donald Watts Davies, CBE FRS \u00E9tait un informaticien, un physicien et un math\u00E9maticien gallois qui a co-invent\u00E9 avec Paul Baran la commutation de paquets."@fr , "Donald Watts Davies var en walisisk vitenskapsmann innen informatikk som, sammen med Paul Baran og Leonard Kleinrock, var med p\u00E5 \u00E5 finne opp pakkesvitsjing for datanettverk."@no , "Donald Watts Davies, CBE FRS was a Welsh computer scientist who was a co-inventor of packet switching (and originator of the term), along with Paul Baran in the US. Davies was born in Treorchy in the Rhondda Valley, Wales. His father, a clerk at a coalmine, died a few months later, and his mother took Donald and his twin sister back to her home town of Portsmouth, where he went to school."@en , "Donald Watts Davies war Physiker und einer der Pioniere der Informationstechnologie."@de . @prefix skos: . @prefix ns13: . dbpedia:Donald_Davies skos:subject ns13:Recreational_cryptographers , , ns13:Commanders_of_the_Order_of_the_British_Empire , ns13:Packets , ns13:Fellows_of_the_British_Computer_Society , ns13:Computer_pioneers , , ns13:Welsh_computer_scientists , ns13:People_from_Rhondda , ns13:Fellows_of_the_Royal_Society , ns13:Alumni_of_Imperial_College_London . @prefix ns14: . dbpedia:Donald_Davies dbpprop:wikiPageUsesTemplate ns14:infobox_scientist . @prefix ns15: . dbpedia:Donald_Davies dbpprop:birthDate ns15:Birth_date ; dbpprop:birthPlace dbpedia:Wales , dbpedia:Treorchy . @prefix ns16: . dbpedia:Donald_Davies dbpprop:deathDate ns16:Death_date_and_age ; dbpprop:almaMater dbpedia:Imperial_College_London ; dbpprop:workplaces ; dbpprop:fields dbpedia:Computer_science ; dbpprop:knownFor dbpedia:Packet_switching . @prefix ns17: . dbpedia:Donald_Davies dbpprop:hasPhotoCollection ns17:Donald_Davies . @prefix ns18: . dbpedia:Donald_Davies dbpprop:wordnet_type ns18:synset-scientist-noun-1 . dbpprop:redirect dbpedia:Donald_Davies . dbpedia:Episcopal_Missionary_Church dbpprop:founder dbpedia:Donald_Davies . dbpedia:William_Millsaps dbpprop:before dbpedia:Donald_Davies . dbpedia:Donald_Watts_Davies dbpprop:redirect dbpedia:Donald_Davies . @prefix yago: . yago:Donald_Davies owl:sameAs dbpedia:Donald_Davies .