IEEE Spectrum

Volume 30 Issue 12 • Dec. 1993

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Displaying Results 1 - 5 of 5
  • Advanced technology/electromagnetism-superconducting wire gets hotter

    Publication Year: 1993, Page(s):26 - 30
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    The significance of superconducting wires made of high-critical-temperature copper-oxide-based ceramics is discussed. The fabrication of wires made from the powdered ceramic material is described, and the characteristics of the resulting wires, particularly the critical current density, are examined. The progress to long wire lengths is discussed, and some applications are considered.<<ETX&g... View full abstract»

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  • Software/parallel processing-Linda on the networks

    Publication Year: 1993, Page(s):31 - 35
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (726 KB)

    The use of the coordination language Linda to facilitate the division of software tasks among several processors in parallel programming is considered. Linda's coordination facilities depend on a view of memory as object-oriented, associative, symmetric, and virtually shared, i.e., data are stored as simple data objects, with type signature and other properties, rather than as bits and bytes. To p... View full abstract»

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  • Perspective/navigation-The Global Positioning System

    Publication Year: 1993, Page(s):36 - 38
    Cited by:  Papers (84)  |  Patents (13)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1101 KB)

    A brief history of navigation is given, highlighting the needs that led ultimately to the development of 3-D satellite based navigation. The evolution of Navstar, commonly known as GPS (Global Positioning System), is traced from its initial conception in 1960. The use of bandwidth compression to overcome the SNR problem is discussed. An explanation of how the GPS works is provided. Civilian as wel... View full abstract»

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  • Platforms: the new contenders-not your father's CPU

    Publication Year: 1993, Page(s):20 - 23
    Cited by:  Papers (12)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (567 KB)

    The capabilities of today's microprocessors are examined. Both RISC (reduced-instruction-set computer) and CISC (complex-instruction-set computer) designs are covered. Superscalar operation, on-chip caches, and branch instructions are discussed. The possibility of multiprocessor chips is discussed, as well as chips soon to be offered.<<ETX>> View full abstract»

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  • Platforms: the new contenders-operating systems go head-to-head

    Publication Year: 1993, Page(s):23 - 25
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (473 KB)

    Characteristics of current operating systems and how they are evolving are examined. The strengths and drawbacks of DOS, Windows, and Unix are discussed.<<ETX>> View full abstract»

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