COM技术在虚拟式声级计软件设计中的应用

Application of COM technology in the design of the software for virtual Sound Level Meter

在虚拟仪器系统中 ,软件是核心。在虚拟仪器的软件设计过程中采用 COM技术可以降低编程的难度 ,提高软件的重用性。文章首先介绍了 COM技术 ,包括 COM组件、COM对象、COM接口以及三者之间的关系 ,并介绍了 COM的一些特性 ;详细介绍了虚拟式声级计的总体结构、软件系统构成以及组件的划分 ,并论述了把

Adopting COM technology in the designing course of software,which is the core of virtual instrument system,can reduce the difficulty of programming and improve the re use rate of software. In this paper,the COM technology is introduced including COM component,COM object,COM interface and the relations among them, and some characteristics of COM are also described. The overall construction of the virtual Sound Level Meter(SLM),the composition of its software system and the division of the components are introduced in detail. The method of using COM technology in the course of designing software is also discussed.