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IEEE Spectrum

Issue 7 • Date July 1994

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Displaying Results 1 - 7 of 7
  • A bit is a bit is a bit? [Reflections]

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (146 KB)
    Freely Available from IEEE
  • L+25: a quarter century after the Apollo landing

    Publication Year: 1994, Page(s):16 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3343 KB)

    When the Apollo 11 rose into space, it was guided to the Moon by a mainly pre-IC, onboard computer with only 36 kilobytes of memory. Even the rendezvous of the lander with the command/service module employed a technique practised only once before in lunar orbit. Twenty-five years on, the author presents an historical overview of the Moon landings, examines the Russian role in the lunar race and de... View full abstract»

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  • Higher visibility for LEDs

    Publication Year: 1994, Page(s):30 - 34
    Cited by:  Papers (12)  |  Patents (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (789 KB)

    The gradually evolving technology of light-emitting diodes has of late made a quantum leap. These semiconductor devices are usurping some of the slots that, till now, had been filled by incandescent lamps and cathode ray tubes. The author describes how the luminance and luminous effiency of light-emitting diodes (LEDs) in the last few years have reached such high levels that they can replace incan... View full abstract»

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  • A Capitol experience [IEEE Congressional Fellow, experience]

    Publication Year: 1994, Page(s):40 - 43
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    Freely Available from IEEE
  • Multimedia's push into power

    Publication Year: 1994, Page(s):44 - 48
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (757 KB)

    The power plant is the specific focus of a prototype supervisory control and data acquisition (SCADA) system that integrates multimedia and visualization. Intended for a coal-fired power plant, the prototype was developed in 1992 by researchers at ABB Corporate Research in Heidelberg, together with practitioners at ABB Power Plant Control in Mannheim, Germany. The prototype equips a control room w... View full abstract»

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  • A slow start for emissions trading

    Publication Year: 1994, Page(s):49 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    Because of differences in state regulations, plant efficiencies, electrical demand, and the costs of labor, equipment, and fuels, the annual cost of cleaning up emissions from power plants varies significantly from utility to utility in the United States. In a system in which allowances can be traded utilities that can significantly clean up their plants' emissions at relatively low cost can do so... View full abstract»

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  • A peripatetic prodigy goes home

    Publication Year: 1994, Page(s):56 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    Mathukumali Vidyasagar was 13 when he entered college, and 35 when he was made an IEEE Fellow. This pacifist has taken charge of a defense research center in his native India. This article briefly reviews his life and work.<> View full abstract»

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