Real-time and embedded systems are in widespread use in the modern world. From the microprocessor controller in a camera, through "smart" traffic lights and production control systems, to large defense systems, computer technology is increasingly a part of systems that control and respond to their environments in real-time. As the technology has improved, we have come to rely on these systems more and more --- we have even put our lives in their hands. Airplanes, biomedical accelerators, nuclear power plants, and the like all depend on real-time control to operate safely. A failure in a control system, such as not responding correctly to faults in the environment, could endanger many lives. Unfortunately, there is a tendency for developers to focuse too heavily on the intrcacies of the engineering and computer technology, to the detriment of understanding the real-world problem at hand. At best, this wastes time and resouces and at worst it is dangerous in light of the life-critical nature of today's systems. This misplaced focus can result at least partly from the lack of a comprehensive set of modeling tools and techniques fitted to the real-time development environment. This book provides the tools and techniques needed for visualizing and verifying the operation of a real-time system prior to construction, and demonstrates their usefulness.

Structured Development for Real-Time Systems

Mellor, Stephen J.

Ward, Paul T.

Computers & Technology

PRENTICE/HALL

Systems Development Without Pain: A User's Guide to Modeling Organizational Patterns

Yourdon

Are you looking for a more effective approach to real-time systems development? Real-Time Object-Oriented Modeling The development of real-time distributed systems is one of the most difficult engineering problems ever faced, taxing the capabilities of traditional real-time software development approaches. Real-Time Object-Oriented Modeling is the first book that brings together, in a single harmonious approach, the power of object-oriented concepts tailored specifically for real-time systems, with an iterative and incremental process based on the use of executable models. Developed by practitioners, the proven methodology described here is becoming a leader in the industry. Using a learn-by-example approach, this book offers: * A single consistent set of graphical modeling concepts, chosen to improve developer effectiveness, which apply uniformly to analysis, design, and implementation. This reduces the learning curve to master the entire method and eliminates expensive discontinuities across different stages of development. * An approach to the object paradigm that is easy to learn and that applies to the construction of reusable architectural design components, not just low-level language elements. This unleashes the true power of the object paradigm. * Techniques for constructing executable models to gain early confidence in specifications and design decisions. * Approaches to project management that deliver the benefits of the object paradigm and executable models.

Real-Time Object-Oriented Modeling

Selic, Bran

Gullekson, Garth

Programming

wiley

Direct communication between DP professionals and users is crucial in developing a successful system. In Systems Development Without Pain, Paul T. Ward introduces A Systems Modeling Language (ASML), a step-by-step approach to defining systems requirements by identifying and modeling patterns in the work environment. ASML removes the usual language barriers between technical and nontechnical experts, enabling users to effectively communicate their needs. The result is a system that finally fulfills the promise of automated technology to enhance the user's productivity. Appropriate for both people experienced in systems development and novices, ASML builds on, but simplifies, the concepts of structured analysis. It is the first technique to integrate data modeling with process modeling, demonstrating the importance of their correlation. With ASML, a statement of requirements can be created quickly, since building a detailed model of a system to be modified is not necessary. With nearly 200 diagrams and examples from everyday life, Systems Development Without Pain helps develop an open, trouble-free relationship among all the people involved in systems development. ABOUT THE AUTHOR Paul T. Ward has nearly twenty years of experience in data processing, many of those in developing systems with heavy end user participation. As a project leader and senior analyst for a mechanical equipment manufacturer, he guided to im-plementation large manufacturing systems that required in¬tensive involvement by users in requirements definition. As a database manager at the same company, he selected and in¬stalled a database management system. Since 1981, Paul T. Ward has been an instructor and consultant at YOURDDN inc. Most recently, he was named Technical Director for Systems Development. He holds a PhD in physical chemistry from Cornell University.

Systems development without pain: A user's guide to modeling organizational patterns

Science & Math

Mathematics

Yourdon Press

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