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Home > Art, Film & Photography > ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300
ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300

ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300


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About the Book

Chapters: PERQ, ICL DRS, One Per Desk, ICL 7500 series, ICL 7502, ICL 7503, ICL 7561, ICL DRS 100, ICL DRS 20, ICL DRS 200, ICL DRS 300, ICL DRS 3000, ICL DRS 400, ICL DRS 500, ICL DRS 6000, . Source: Wikipedia. Pages: 81. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The PERQ, also referred to as the Three Rivers PERQ or ICL PERQ, was a pioneering workstation computer produced in the early 1980s. The workstation was conceived by five former Carnegie Mellon University alumni and employees who formed the startup Three Rivers Computer Corporation (3RCC) in 1974. One of the founders, Brian Rosen, also worked at Xerox PARC on the Dolphin workstation. The PERQ design was influenced by the original workstation computer, the Xerox Alto. It was the first commercially-produced personal workstation, a prototype PERQ being shown at the 1979 SIGGRAPH conference. The origin of the name "PERQ" is from the word perquisite. As a result of interest from the UK Science Research Council (later, the Science and Engineering Research Council), 3RCC entered into a relationship with the British computer company ICL in 1981 for European distribution, and later co-development and manufacturing. The PERQ was used in a number of academic research projects in the UK during the 1980s. 3RCC was renamed PERQ System Corporation in 1984. It went out of business in 1986, largely due to competition from other workstation manufacturers such as Sun Microsystems, Apollo Computer and Silicon Graphics. The PERQ CPU was a microcoded discrete logic design, rather than a microprocessor. It was based around 74S181 bit-slice ALUs and an Am2910 microcode sequencer. The PERQ CPU was unusual in having 20-bit wide registers and a writable control store (WCS), allowing the microcode to be redefined. The CPU had a microinstruction cycle period ...http: //booksllc.net/?id=10143


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Product Details
  • ISBN-13: 9781157195153
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300
  • Width: 229 mm
  • ISBN-10: 1157195156
  • Publisher Date: 18 Oct 2010
  • Binding: Paperback
  • Spine Width: 5 mm
  • Weight: 132 gr


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ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300
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ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300
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ICL Workstations: Perq, ICL Drs, One Per Desk, ICL 7500 Series, ICL 7502, ICL 7503, ICL 7561, ICL Drs 100, ICL Drs 20, ICL Drs 200, ICL Drs 300

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