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IEE Review

Issue 6 • Date 20 June 1991

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Displaying Results 1 - 3 of 3
  • 'It will not slice a pineapple'-Charles Babbage and the first computer

    Publication Year: 1991, Page(s):217 - 220
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (409 KB)

    Charles Babbage's abortive attempt to build the first computer cost as much, in its day, as 50 brand-new steam locomotives. Here, the author recounts the story of perhaps the most heroic failure of the 19th century and outlines the two classes (difference and analytical) of engines designed by Babbage.<> View full abstract»

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  • The synchronous digital hierarchy. II. Survival of the fittest

    Publication Year: 1991, Page(s):229 - 233
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (440 KB)

    For pt.I see ibid., vol.37, no.5, p.185-9, 1991. The authors explain how the synchronous digital hierarchy (SDH) offers a solution the problems caused by the digitalisation of the world's telecommunications networks. The principles and the pros and cons of SDH are also outlined.<> View full abstract»

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  • Making the rules [industrial computer control]

    Publication Year: 1991, Page(s):235 - 239
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB)

    All processes need some form of control, even if this only consists of simply switching motors and actuators on and off. In some cases, process parameters must be controlled very precisely. Rule-based control offers more flexibility and better control of such complex processes than more conventional model-based techniques. Here, the author describes how rule-based expert systems have proved their ... View full abstract»

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