psl/psa a computer-aided technique for structured documentation and analysis of information processing systems
requirements analysis PSL/PSA problem statement analysis computer-aided documentation PSL/PSA is a Computer-Aided Structured Documentation and Analysis technique that was developed for, and is being used for, analysis and documentation of requirements and preparation of functional specifications for information processing systems. The present status of requirements definition is described as the basis for describing the problem which PSL/PSA is intended to solve. The basic concepts of the Problem Statement Language are introduced and the content and use of a number of standard reports that can be produced by the Problem Statement Analyzer are briefly described. The experience to date indicates that computer aided methods can be used to aid system development during the requirements definition stage and that the main factors holding back such use are not so much related to the particular characteristics and capabilities of PSL/PSA as they are to organizational considerations involved in any change in methodology and procedure.
computation structure documentation analysis informal process systems requirements use functional definition concept language contention standardization experience method system development factor capabilities change methodology