This paper describes the work carried out as part of a Design to Life Cost Study. The aim of this phase was to examine the loss of system availability due to software in a computer system installed in a Royal Naval frigate. The paper shows that the simple classification of possible causes of error for such a system into hardware and software is inadequate. This is demonstrated by examination of two approaches to understanding the nature of software integrity; counting the programming errors and the consideration of the behaviour of a program in operation. The latter approach was applied to field data collected from a Royal Naval frigate. Analysis showed that the reported loss of system availability differed from that truly due to software. This supported the hypothesis that a simple classification of errors was inadequate. It was found that system behaviour could be suitably represented by Weibull models.


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    Title :

    The software integrity of a computer system installed in a Royal Naval frigate


    Additional title:

    Die Vollstaendigkeit der Software eines Computersystems, das bei einer koeniglichen Marinefregatte eingesetzt ist


    Contributors:
    Hart, G. (author)

    Published in:

    Publication date :

    1982


    Size :

    6 Seiten, 3 Bilder, 1 Tabelle, 2 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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