English Electric System 4
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English Electric System 4
The English Electric (later ICL) System 4 was a mainframe computer announced in 1965. It was derived from the RCA Spectra 70 range, itself a variant of the IBM System 360 architecture. The models in the range included the System 4-10 (cancelled), 4-30 (1967), 4-50 (1967, practically the same as the RCA 70/45), 4-70 (1968, designed by English Electric) and 4-75. ICL documentation also mentions a model 4-40. This was a slugged version of the 4-50, introduced when the 4-30 (intended to be the volume seller) was found to be underpowered and had to be withdrawn. The 4-10 was introduced as a satellite computer, but demand was very low, so it was withdrawn. Only the 4-50 and 4-70, and their successors, the 4-52 and 4-72, sold in any numbers. A slugged 4-72 (the 4-62) was introduced for sale in Eastern Europe. The System 4-50 and 4-70 were intended for real-time applications, for they had four processor states, each with its own set of general-purpose registers A processor regist ...
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ICL System 4, ZIPO, Trójmiasto-Przymorze (I197505)
ICL may refer to: Companies and organizations * Idaho Conservation League * Imperial College London, a UK university * Indian Confederation of Labour * Indian Cricket League * Department_of_Chemistry,_University_of_Oxford, Inorganic Chemistry Laboratory of the University of Oxford * Israel Chemicals, an Israeli multi-national chemical company that produces and markets fertilizers, metals and other special-purpose chemical products * International Computers Limited, a UK company acquired by Fujitsu * International Confederation of Labor, a global anarcho-syndicalist union federation * International Consortium on Landslides, Kyoto, Japan Computing * Ice Lake (microprocessor), Ice Lake series Intel CPUs * ICO (file format)#Icon library, Icon library filename extension * Clean (programming language) source filename extension * Inter-Chassis Link, Brocade's name for an InterSwitch Trunk link Chemistry and biology * Idiopathic CD4+ lymphocytopenia, a medical condition * Implantable colla ...
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Angol Utca 27
Angol is a commune and capital city of the Malleco Province in the Araucanía Region of southern Chile. It is located at the foot of the Nahuelbuta Range and next to the Vergara River, that permitted communications by small boats to the Bío-Bío River and Concepción. This strategic position explains the successive foundations of this city during the Arauco War. It was first founded in 1553 as a "conquistador" fort of ''Confines'', the fort was later destroyed and rebuilt several times and it was not until the Pacification of Araucania in the late 19th century that it was rebuilt with the name of Angol. The city has a current population of approximately 53,000. Within the electoral divisions of Chile, it belongs to the 48th electoral district and the 14th senatorial circumscription. History Modern Angol was first founded in 1553 as the conquistador fort of ''Los Confines'' by Pedro de Valdivia, the fort was later that year abandoned and destroyed by the Mapuche after the Bat ...
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English Electric
N.º UIC: 9094 110 1449-3 (Takargo Rail) The English Electric Company Limited (EE) was a British industrial manufacturer formed after the Armistice of 11 November 1918, armistice of World War I by amalgamating five businesses which, during the war, had been making munitions, armaments and aeroplanes. It initially specialised in industrial electric motors and transformers, railway locomotives and traction equipment, diesel motors and steam turbines. Its activities were later expanded to include consumer electronics, nuclear reactors, guided missiles, military aircraft and mainframe computers. Two English Electric aircraft designs became landmarks in British aeronautical engineering; the Canberra and the Lightning. In 1960, English Electric Aircraft (40%) merged with Vickers (40%) and Bristol (20%) to form British Aircraft Corporation. In 1968 English Electric's operations were merged with GEC's, the combined business employing more than 250,000 people. Foundation Aiming ...
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International Computers Limited
International Computers Limited (ICL) was a British computer hardware, computer software and computer services company that operated from 1968 until 2002. It was formed through a merger of International Computers and Tabulators (ICT), English Electric Computers (EEC) and Elliott Automation in 1968. The company's most successful product line was the ICL 2900 Series range of mainframe computers. In later years, ICL diversified its product line but the bulk of its profits always came from its mainframe customers. New ventures included marketing a range of powerful IBM clones made by Fujitsu, various minicomputer and personal computer ranges and (more successfully) a range of retail point-of-sale equipment and back-office software. Although it had significant sales overseas, ICL's mainframe business was dominated by large contracts from the UK public sector, including Post Office Ltd, the Inland Revenue, the Department for Work and Pensions and the Ministry of Defence. It also had ...
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RCA Spectra 70
The RCA Spectra 70 was a line of electronic data processing (EDP) equipment manufactured by the Radio Corporation of America’s computer division beginning in April 1965. The Spectra 70 line included several CPU models, various configurations of core memory, mass-storage devices, terminal equipment, and a variety of specialized interface equipment. The system architecture and instruction-set were largely compatible with the non-privileged instruction-set of the IBM System/360, including use of the EBCDIC character set. While this degree of compatibility made some interchange of programs and data possible, differences in the operating system software precluded transparent movement of programs between the two systems. Competition in the mainframe market was fierce, and in 1971 the company sold the computer division and the Spectra 70 line to Sperry Rand, taking a huge write down in the process. System overview Five models of the Spectra 70 CPU were announced around 1965, ...
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IBM System 360
The IBM System/360 (S/360) is a family of mainframe computer systems that was announced by IBM on April 7, 1964, and delivered between 1965 and 1978. It was the first family of computers designed to cover both commercial and scientific applications and to cover a complete range of applications from small to large. The design distinguished between architecture and implementation, allowing IBM to release a suite of compatible designs at different prices. All but the only partially compatible Model 44 and the most expensive systems use microcode to implement the instruction set, which features 8-bit byte addressing and binary, decimal, and hexadecimal floating-point calculations. The System/360 family introduced IBM's Solid Logic Technology (SLT), which packed more transistors onto a circuit card, allowing more powerful but smaller computers to be built. The slowest System/360 model announced in 1964, the Model 30, could perform up to 34,500 instructions per second, with memory ...
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Processor Register
A processor register is a quickly accessible location available to a computer's processor. Registers usually consist of a small amount of fast storage, although some registers have specific hardware functions, and may be read-only or write-only. In computer architecture, registers are typically addressed by mechanisms other than main memory, but may in some cases be assigned a memory address e.g. DEC PDP-10, ICT 1900. Almost all computers, whether load/store architecture or not, load data from a larger memory into registers where it is used for arithmetic operations and is manipulated or tested by machine instructions. Manipulated data is then often stored back to main memory, either by the same instruction or by a subsequent one. Modern processors use either static or dynamic RAM as main memory, with the latter usually accessed via one or more cache levels. Processor registers are normally at the top of the memory hierarchy, and provide the fastest way to access data. The ...
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Edinburgh Regional Computer Centre
Edinburgh ( ; gd, Dùn Èideann ) is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian on the southern shore of the Firth of Forth. Edinburgh is Scotland's List of towns and cities in Scotland by population, second-most populous city, after Glasgow, and the List of cities in the United Kingdom, seventh-most populous city in the United Kingdom. Recognised as the capital of Scotland since at least the 15th century, Edinburgh is the seat of the Scottish Government, the Scottish Parliament and the Courts of Scotland, highest courts in Scotland. The city's Holyrood Palace, Palace of Holyroodhouse is the official residence of the Monarchy of the United Kingdom, British monarchy in Scotland. The city has long been a centre of education, particularly in the fields of medicine, Scots law, Scottish law, literature, philosophy, the sc ...
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Edinburgh Multiple Access System
The Edinburgh Multi-Access System (EMAS) was a mainframe computer operating system at the University of Edinburgh. The system went online in 1971. EMAS was a powerful and efficient general purpose multi-user system which coped with many of the computing needs of the University of Edinburgh and the University of Kent (the only other site outside Edinburgh to adopt the operating system). History Originally running on the ICL System 4/75 mainframe (based on the design of the IBM 360) it was later reimplemented on the ICL 2900 series of mainframes (as EMAS 2900 or EMAS-2) where it ran in service until the mid-1980s. Near the end of its life, the refactored version was back-ported (as EMAS-3) to the Amdahl 470 mainframe clone, and thence to the IBM System/370-XA architecture (the latter with help from the University of Kent, although they never actually ran EMAS-3). The National Advanced System (NAS) VL80 IBM mainframe clone followed later. The final EMAS system (the Edinbu ...
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ICL Mainframe Computers
ICL may refer to: Companies and organizations * Idaho Conservation League * Imperial College London, a UK university * Indian Confederation of Labour * Indian Cricket League * Inorganic Chemistry Laboratory of the University of Oxford * Israel Chemicals, an Israeli multi-national chemical company that produces and markets fertilizers, metals and other special-purpose chemical products * International Computers Limited, a UK company acquired by Fujitsu * International Confederation of Labor, a global anarcho-syndicalist union federation * International Consortium on Landslides, Kyoto, Japan Computing * Ice Lake series Intel CPUs * Icon library filename extension * Clean (programming language) source filename extension * Inter-Chassis Link, Brocade's name for an InterSwitch Trunk link Chemistry and biology * Idiopathic CD4+ lymphocytopenia, a medical condition * Implantable collamer lens * Isocitrate lyase, an enzyme * ICl, chemical symbol for iodine monochloride * Intracaval le ...
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Early British Computers
Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early Branch, a stream in Missouri * Early County, Georgia Other uses * ''Early'' (Scritti Politti album), 2005 * ''Early'' (A Certain Ratio album), 2002 * Early (name) * Early effect, an effect in transistor physics * Early Records, a record label * the early part of the morning See also * Earley (other) Earley is a town in England. Earley may also refer to: * Earley (surname), a list of people with the surname Earley * Earley (given name), a variant of the given name Earlene * Earley Lake, a lake in Minnesota *Earley parser, an algorithm *Earley ...
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