Resumen
The article presents information on the use of Unified Modeling Language (UML) in real-time domain. All real-time systems ultimately involve interaction with the physical world. The ultimate and inevitable source of complexity in real-time software, is the physical world itself. The Unified Modeling Language [1, 2, 9] is one of the most recent examples of a modeling tool. It was designed for use with object-oriented and object-based systems and applications. In 1997, the Object Management Group, an international consortium of software vendors and users, adopted UML as a standard. Since then, interest in the UML has grown rapidly and it is becoming a lingua franca within the software community. Designing real-time software is immensely challenging not only because of timeliness constraints but also because of the need to contend with the daunting complexity of the physical world. In these circumstances, modeling is an important tool and, as has been shown in this article, UML is particularly well suited to this purpose. This is because UML incorporates most of the basic modeling abstractions that are used in the real-time domain, such as state machines and collaborations, and also because the flexibility of its stereotype mechanism allows these general abstractions to be specialized to the desired degree of accuracy. INSET: OMG'S Real-Time Analysis and Design Initiative