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Issue No. 03 - May (1982 vol. 8)
ISSN: 0098-5589
pp: 250-269
P. Zave , Bell Laboratories
The approach to requirements specification for embedded systems described in this paper is called "operational" because a requirements specification is an executable model of the proposed system interacting with its environment. The approach is embodied by the language PAISLey, which is motivated and defined herein. Embedded systems are characterized by asynchronous parallelism, even at the requirements level; PAISLey specifications are constructed by interacting processes so that this can be represented directly. Embedded systems are also characterized by urgent performance requirements, and PAISLey offers a formal, but intuitive, treatment of performance.
system design and specification, Applicative programming, distributed processing, embedded (real-time) systems, requirements analysis and specification, simulation models

P. Zave, "An Operational Approach to Requirements Specification for Embedded Systems," in IEEE Transactions on Software Engineering, vol. 8, no. , pp. 250-269, 1982.
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