Volume 28 Issue 5 • May 1991

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  • Smart cars and highways go global

    Publication Year: 1991, Page(s):26 - 36
    Cited by:  Papers (35)  |  Patents (17)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (2476 KB)

    The status of plans and projects for intelligent vehicle-highway systems (IVHS) in Europe, Japan, and the US is examined. The four broad areas covered by IVHS are described. They are advanced traffic management systems. advanced traveler information systems commercial vehicle operations systems, and advanced vehicle control systems. A variety of projects in Europe, Japan, and the US which aim at p... View full abstract»

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  • Incredible shrinking computers

    Publication Year: 1991, Page(s):37 - 41
    Cited by:  Papers (15)  |  Patents (9)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (979 KB)

    The redesign of systems and components to create desktop-power notebook computers weighing under eight pounds is described. The bottom-up design approach is discussed, and some of the problems encountered and their solutions are examined. Particular attention is given to the batteries, which contribute up to one third of the total weight, and the disk drives, which must withstand shock and vibrati... View full abstract»

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  • Utilities get serious about efficiency

    Publication Year: 1991, Page(s):42 - 43
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    US experiments that promise enormous energy savings are discussed. Utilities and state officials in California, New York. and and New England have adopted regulations enabling utilities to profit as much or more by convincing their customers to cut their electricity use by relying on more technologically advanced, energy-efficient lighting, equipment, and appliances. It is estimated that state reg... View full abstract»

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  • Wanlass's CMOS circuit

    Publication Year: 1991
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (151 KB)

    The invention of complementary-MOS (CMOS) logic circuitry by Frank Wanlass in 1963 is recounted. The difficulties encountered by Wanlass in an attempt to make stable silicon MOSFETs and how they led him to the CMOS circuit are described. The first demonstration circuit, a two-transistor inverter, consumed just a few nanowatts of standby power and exhibited propagation delay times on the order of 1... View full abstract»

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