AbstractBecause of the growing demand for increasingly complex computer‐based systems there is now an urgent need to provide tools to assist during the design of such systems.Formal specifications and formal methods provide such assistance but their widespread adoption has been hindered by the so‐called ‘math fear’ and the perception that the tools are too difficult, too time consuming and too costly to use in a commercial environment.The aim of this article is to dispel the mystery surrounding the topic and to explain what formal methods are, how and why they are used, the benefits that accrue and why the technology should be accepted on a broader front.The application of formal methods to the design of computer‐based systems will be discussed without resorting to jargon or mathematics. The discussion will concentrate more on the software content of systems but the arguments apply equally well to hardware.Some of the available tools will also be i
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