At first , it analyses the three parts of an application system and discussed the functions and effect of each part in this part . then it introduces the function definition , the acquirement of aid , the design of class and the establishment of the interface between applet and terminal in turns . finally it shows the initialization of constant , the definition of return value , the function and flow chart of main method in brief 在这一部分中，首先分析了系统应用程序结构的三大部分；然后依次讨论了各个部分的功能和作用，逐步介绍了如何实现卡上小应用程序的过程；最后简要说明了程序中用到的常量的初始化、返回值的定义和主要方法的功能和流程图。
A new concept in websphere application server v6 is that of system applications , which are applications that have been developed as standard j2ee applications but are intended to be an integral part of the websphere application server product , not subject to end user manipulation Websphere application server v6中的一个新的概念是系统应用程序，该应用程序是作为标准的j2ee应用程序来开发，但是倾向于作为websphere application server产品的一部分，不被终端用户所操纵。
On the other hand , the thesis studies to develop the design software library for the hdcs with c + + programming language , including rcs module and communication tool of control system . moreover , based on the concept and properties of class and the merits of application programming interface ( api ) , the thesis puts forwards to use the abstract class to realize the elements of the design software library , such as the control module ( rcs module ) class and the communication classes ( neutral message language and communication management system ) , encapsulating the bottom details of the application and providing the top interface for user , as leads to the interface between modules be simple and makes user master and use them conveniently . what ' s more , the control system developed by the design software has good expansibility and reusability 另外，本文研究了用c + +程序设计语言进行递阶分布控制系统设计软件库的开发，包括rcs模块和系统通讯工具。基于类的概念与特征以及应用程序编程接口( api )的优点，提出用抽象类实现设计软件库元件，如控制模块( rcs模块)类和通讯类(中性消息语言nml ( neutralmessagelanguage ，简称nml )和通讯管理系统cms ( communicationmanagementsystem ，简称cms ) ) ，封装了控制系统应用程序底层的工作细节并提供了高层接口，从而使控制模块之间接口简单，便于用户掌握和使用，使开发出的控制系统具有很好的扩展性和重用性。
