UML Model Analysis And Implementation For PDH System

With the development and revolution of computer industry, the complexity of software is being raised continuously. The size of the source code is increasing, and the possibility of failure in the project has been a corresponding increase. In the long-term research and practice, people more and more deeply realize that the establishment of a concise and accurate model is the key to grasp the complexity of the system. Traditional methods of analysis and design software are no uniform standard. The process in development is seriously affected by artificial factors,which making the system is less in the efficiency and cost. As a result, a new study in software development methods with this field has become an urgent demand. As the standards of object-oriented modeling,using UML can make complex system design Simplistic.It uses the way of object-oriented graphics to describe the system. And it Support the entire process from the analysis,design to Modeling. In this paper,by studying the existing technology of UML, we made a UML-based modeling analysis with the actual project.And apply it to the example of a system development.The subject of this research has some significance.On the one hand in academic research, the area of UML modeling now the research has just begun. So There are still many issues that need to be soluted by now. By dynamic diagram,we can verify the functions of the design in advance.On the other hand, based on the realization of hardware also has practical significance.In summary, the work of this paper is as follows:1. By the example of the actual design, we can provide UML model. We can make not only the static diagram. With analyzing these combined diagrams, the system can be concise.2. By dynamic diagrams, we can verify the functions of the design.3. By using the programmable logic hardware CPLD, we can realize some main function of circuits.