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Harwell computer

The Harwell computer, or Harwell Dekatron computer, later known as the Wolverhampton Instrument for Teaching Computing from Harwell (WITCH), is an early British computer of the 1950s based on valves and relays. From 2009 to 2012, it was restored at the National Museum of Computing. In 2013, for the second time, the Guinness Book of World Records…

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Also known as
Wolverhampton Instrument for Teaching Computing from Harwell (WITCH)
CPU
Relays for sequence control and valve-based (vacuum tube) electronics for calculations
Developer
Atomic Energy Research Establishment in Harwell, Berkshire
Discontinued
1973 (1973)
Display
Either a Creed teleprinter or a paper tape punch
Memory
20 (later 40) eight-digit dekatron registers

Topics to explore

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Overview

Construction and use at Harwell

Subsequent use, renaming as the WITCH and disuse

Restoration

Painting

Advanced semantic analysis

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Map overview Semantic statistics

Harwell computer

Nodes37
Edges36
Triples52
Avg. degree1.95
Density0.054054
Components1

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Harwell computer

Top relations

related to External links · 34
Harwell computer → April, Archived, BBC News, Bletchley, Britain's Oldest Working Computer, Computer, Computer Conservation Society, Computing, February, Harwell, Harwell Dekatron, Inside, ISBN, Life, May, Media, New Book, November, Retrieved, Roars
related to Restoration · 8
Harwell computer → Bletchley Park, Computer Conservation Society, Computing, From September, Harwell, In, The, The National Museum
Also known as · 1
Harwell computer → Wolverhampton Instrument for Teaching Computing from Harwell (WITCH)
CPU · 1
Harwell computer → Relays for sequence control and valve-based (vacuum tube) electronics for calculations
Developer · 1
Harwell computer → Atomic Energy Research Establishment in Harwell, Berkshire
Discontinued · 1
Harwell computer → 1973 (1973)
Display · 1
Harwell computer → Either a Creed teleprinter or a paper tape punch
Memory · 1
Harwell computer → 20 (later 40) eight-digit dekatron registers
Power · 1
Harwell computer → 1.5 kW
Released · 1
Harwell computer → May 1952; 74 years ago (1952-05)

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Important terminology

computer harwell witch computing museum dekatron machine restoration time working painting wolverhampton 1973 relays used 2009 national may calculations tape

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Harwell computerAlso known asWolverhampton Instrument for Teaching Computing from Harwell (WITCH)1.00infobox
Harwell computerCPURelays for sequence control and valve-based (vacuum tube) electronics for calculations1.00infobox
Harwell computerDeveloperAtomic Energy Research Establishment in Harwell, Berkshire1.00infobox
Harwell computerDiscontinued1973 (1973)1.00infobox
Harwell computerDisplayEither a Creed teleprinter or a paper tape punch1.00infobox
Harwell computerMemory20 (later 40) eight-digit dekatron registers1.00infobox
Harwell computerPower1.5 kW1.00infobox
Harwell computerReleasedMay 1952; 74 years ago (1952-05)1.00infobox
Harwell computerStoragePaper tape1.00infobox
Harwell computerWeight2.5 tonnes1.00infobox
Harwell computerrelated to External linksWiktionary-logo-en-v20.60section
Harwell computerrelated to External linksMedia0.60section

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