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IEEE Spectrum

Issue 4 • April 1989

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Displaying Results 1 - 6 of 6
  • Intel's secret is out

    Publication Year: 1989, Page(s):22 - 28
    Cited by:  Papers (13)  |  Patents (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (982 KB)

    The design and development of the million-transistor N10 chip, which is aimed at workstations and supercomputers, is described. This superfast microprocessor is also the company's first chip to use a reduced instruction set. The chip is designed for testability, executes each instruction in one clock cycle, and features on-chip parallelism.<> View full abstract»

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  • Unlocking the magic of Maxwell's equations

    Publication Year: 1989, Page(s):29 - 33
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    The direct solution of Maxwell's equations for high-frequency design at the device level is discussed, focusing on the use of finite-element methods. Some of the computational difficulties encountered are examined, and the use of Delaunay triangulation for mesh generation, which mitigates some of the problems, is described. The application of finite-element analysis to magnetics is discussed.< View full abstract»

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  • New anatomies for semiconductor wafers

    Publication Year: 1989, Page(s):34 - 38
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (573 KB)

    The mixing and matching of semiconductor materials to produce specific performance characteristics is discussed. Instances are GaAs-on-Si and Si-on-insulator wafers, and wafers that layer various III-V and II-VI materials. The techniques, collectively named wafer engineering make it possible to grow ultrathin freestanding wafers. The discussion focuses on GaAs-on-Si and Si-on-insulator, which have... View full abstract»

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  • Toward a unified theory of managing large networks

    Publication Year: 1989, Page(s):39 - 42
    Cited by:  Papers (1)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB)

    The growing web of computer networks has triggered a search for an organizing principle to monitor and control operations. The various system management functions are identified, and the development of network management standards is discussed. Particular attention is given to the Basic Reference Model for Open Systems Interconnection (OSI), developed by the International Organization for Standard... View full abstract»

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  • Parkinson's gun director

    Publication Year: 1989
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (134 KB)

    The invention of an electromechanical system for directing antiaircraft guns is described. The inventor, David B. Parkinson, was working on improving an instrument called an automatic level recorder, which used strip-chart paper to plot the logarithm of an applied, rapidly varying voltage. A critical component was a small potentiometer, which controlled a pair of magnetic clutches that in turn con... View full abstract»

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  • High-tech dig for a dinosaur

    Publication Year: 1989, Page(s):48 - 49
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (399 KB)

    The use of remote sensing to uncover the skeleton of the seismosaurus, a dinosaur at least 37 meters long, is discussed. Most of the seismosaurus skeleton is believed to lie under 3 to 5 m of sandstone, in a government preserve, so the dig must disturb the environment as little as possible. The techniques being used are radar, magnetometry, gamma rays and acoustic tomography.<> View full abstract»

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