Origin of Term
A logistics conference paper in 1953 divided "requirements for data processing equipment into two groups: functional requirements and performance requirements." The concept of functional and non-functional requirements was first presented in 1982 at the Computer Software and Application conference (COMPSAC) by R.T. Yeh. Functional requirements are also addressed in detail by G.C. Roman in April 1985 edition of Computer titled "A taxonomy of current issues in requirements engineering" in which he addresses attributes of a functional requirement.
Read more about this topic: Functional Requirement
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