• Plessey System 250, also known as PP250, was the first operational computer to implement capability-based addressing, to check and balance the computation...
    12 KB (1,289 words) - 16:21, 2 January 2025
  • which split the assets of the Plessey group. The majority of Plessey's defence assets were amalgamated into BAE Systems in 1999 when British Aerospace...
    39 KB (4,240 words) - 01:17, 16 September 2024
  • Plessey was a British electronics company. It can also refer to: Plessey Code, a British barcode system Plessey System 250, a computer system that implements...
    472 bytes (85 words) - 05:03, 6 September 2019
  • Thumbnail for CAP computer
    CAP computer (category Capability systems)
    Instead of the programmer-visible registers used in Chicago and Plessey System 250 designs, the CAP would load internal registers silently when a program...
    4 KB (453 words) - 02:20, 12 June 2023
  • points to). Some systems have also been based on capability-based addressing (hardware support for capabilities), such as Plessey System 250. Programs possessing...
    14 KB (1,678 words) - 09:51, 28 December 2024
  • Thumbnail for List of British computers
    39 One Per Desk Jupiter Ace Memotech MTX Nascom Nascom 1 Nascom 2 Plessey System 250 Raspberry Pi Research Machines Research Machines 380Z LINK 480Z RM...
    4 KB (388 words) - 07:32, 7 September 2024
  • these benefits lead to measurably more robust and secure systems. The Plessey System 250 was a system originally designed for use in telephony switches, which...
    14 KB (1,571 words) - 13:13, 26 November 2024
  • security: Plessey System 250, IBM System/38, Intel iAPX 432 architecture and KeyKOS. Capability approaches are widely used in research systems such as EROS...
    18 KB (2,268 words) - 03:08, 30 December 2024
  • John Allen Clark (category Plessey)
    services to exports. He died on 3 December 2001, in Barbados. Plessey Plessey System 250 Plessey Code Anne Pimlott Baker, Clark, Sir John Allen (1926–2001)...
    5 KB (613 words) - 12:36, 27 September 2022
  • and modular battlefield wide area network communications system based on the Plessey System 250 architecture. It was initially designed to meet the needs...
    41 KB (5,227 words) - 23:07, 26 November 2024
  • warning radar developed by Plessey and first produced in 1975. It used a pencil beam and simple frequency scanning system known as "squint scan" to produce...
    12 KB (1,644 words) - 14:18, 26 September 2024
  • developed by the UK's Plessey in partnership with US-based ITT-Gilfillan. The system combined the receiver electronics, computer systems and displays of the...
    18 KB (2,614 words) - 06:45, 8 February 2024
  • Capability-based addressing (category Operating system security)
    be written to by the process that will use them. For example, the Plessey System 250 required that all capabilities be stored in capability-list segments...
    8 KB (908 words) - 19:44, 3 January 2025
  • Thumbnail for SAMPSON
    between Plessey, Roke Manor Research, and the Defence Evaluation and Research Agency. Plessey was acquired by Siemens in 1989 to become Siemens-Plessey, itself...
    9 KB (1,127 words) - 16:09, 13 August 2023
  • Thumbnail for BBC Far Eastern Relay Station
    only accessible by boat. 6 Plessey PRD200, 10 Channel diversity receivers, a Plessey PR2250 search receiver and a Plessey PR2250 receiver modified for...
    13 KB (1,518 words) - 09:53, 22 November 2024
  • Associated Electrical Industries in 1967, Yarrow Shipbuilders in 1985, Plessey companies in 1989, parts of Ferranti's defence business in 1990, the rump...
    131 KB (12,419 words) - 10:20, 1 January 2025
  • a £2.75m contract, Plessey supplied the secondary radar system for the new West Drayton site, to operate from mid-1969, on Plessey Digitrace screens....
    35 KB (4,934 words) - 01:16, 15 September 2024
  • Thumbnail for Clansman (military radio)
    Clansman radio equipment was built by Racal, Mullard Equipment Ltd (MEL) and Plessey, although headsets and ancillaries were also produced by Amplivox (who...
    22 KB (3,178 words) - 22:14, 13 August 2024
  • Atlas, jointly developed by Ferranti, the University of Manchester and Plessey in 1963. The machine had an associative (content-addressable) memory with...
    43 KB (5,358 words) - 09:13, 14 December 2024
  • Thumbnail for Acorn Archimedes
    eventual availability. Fabrication of the device was performed by GEC Plessey Semiconductors and was reported to be in "an advanced stage of production"...
    275 KB (30,255 words) - 20:35, 14 September 2024
  • professor of neuropsychology at the University of Bristol; Roger Mathias of Plessey Radar and the Multi-function Electronically Scanned Adaptive Radar (MESAR)...
    272 KB (39,683 words) - 10:06, 26 December 2024
  • Thumbnail for Atlas (computer)
    joint development effort among the University of Manchester, Ferranti and Plessey. Two other Atlas machines were built: one for BP and the University of...
    25 KB (3,075 words) - 15:27, 24 September 2024
  • Thumbnail for List of equipment of the Indonesian Air Force
    canggih, TNI AU telah menambah kekuatan alutsistanya dengan radar jennis Plessey AR 325 Commander buatan Inggris sebanyak tiga unit. Radar generasi ke-4...
    74 KB (3,274 words) - 07:01, 26 December 2024
  • Thumbnail for Piaggio P.180 Avanti
    12 fuselages were manufactured in Wichita, Kansas, with H & H Parts and Plessey Midwest, then flown to Italy for final assembly. Avanti Aviation Wichita...
    64 KB (5,559 words) - 20:19, 9 November 2024
  • with S713, whilst Plessey won the contract for the E/F band systems with a modified version of their civilian frequency-scanned systems. Further expansion...
    33 KB (4,976 words) - 03:20, 16 May 2024
  • Thumbnail for Collins-class submarine
    practices, while the combat data system tenders had been narrowed down by unjustified development risk in the Plessey and Krupp/Ferranti proposals, and...
    131 KB (14,882 words) - 19:31, 4 November 2024
  • Thumbnail for AMES Type 85
    85's by new mobile systems based mostly on the Marconi Martello (as AMES Type 90 and 91) and to a lesser extent the more mobile Plessey AR320 (as AMES Type...
    52 KB (8,114 words) - 11:52, 29 October 2024
  • Thumbnail for South East England
    the site became Plessey Radar in 1965, and currently is run by BAE Systems. Sperry Gyroscope in Bracknell produced the guidance systems for Britain's 1960s...
    179 KB (17,470 words) - 19:18, 4 December 2024
  • Thumbnail for Westland Sea King
    radome, but had American Bendix AN/AQS-13A dipping sonar instead of the Plessey sonar of the Royal Navy Sea Kings. They also had more powerful engines...
    86 KB (10,025 words) - 00:24, 3 January 2025
  • are circumstances where this is undesirable. UK company law FTSE 100 FTSE 250 "Green, (James) Maurice Spurgeon", Oxford Dictionary of National Biography...
    17 KB (264 words) - 20:31, 27 August 2024