OBSERV / CRUISE — A CASE environment for prototyping of complex systems

The paper presents a CASE environment for rapid prototyping of software. The environment supports the OBSERV methodologyand language,which combines the objectoriented approach (for system decomposition), finite state machines (to model behavior), and logic programming paradigm (for describing activities). The environment is based on a graphical front end, named CRUISE and includes tools for editing, simulation (or execution), browsing, and static checking. The paper outlines the OBSERV methodolgy, and presents in detail the CRUISE user interface, and each of the tools.