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Issue No. 01 - March (1976 vol. 2)
ISSN: 0098-5589
pp: 1-9
D.L. Parnas , Research Group on Operating Systems I, Fachbereich Informatik, Technische Hochschule Darmstadt
Program families are defined (analogously to hardware families) as sets of programs whose common properties are so extensive that it is advantageous to study the common properties of the programs before analyzing individual members. The assumption that, if one is to develop a set of similar programs over a period of time, one should consider the set as a whole while developing the first three approaches to the development, is discussed. A conventional approach called "sequential development" is compared to "stepwise refinement" and "specification of information hiding modules." A more detailed comparison of the two methods is then made. By means of several examples it is demonstrated that the two methods are based on the same concepts but bring complementary advantages.
stepwise refimement, Information hiding modules, module specifications, program families, software design methodology, software engineering

D. Parnas, "On the Design and Development of Program Families," in IEEE Transactions on Software Engineering, vol. 2, no. , pp. 1-9, 1976.
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