摘要：随着微型计算机和软件技术的发展，虚拟仪器在智能化程序、处理能力、性能价格比、可操作性等方面与传统仪器相比都具有明显的技术优势，将虚拟仪器引入高校的实验教学不但可以提高测试效率和教学的质量，而且为降低实验仪器成本提供了有效的途径和方法。

　　本文选用Labview图形化编程语言为开发软件，主要开发虚拟实验仪器：虚拟信号发生器，同时提出了虚拟实验室的建设方案。基于专业虚拟仪器开发工具Labview，设计虚拟函数信号发生器。第一个虚拟信号发生器能够产生正弦波、三角波、方波、锯齿波四种波形，还有两个复杂的波形。

关键字：虚拟仪器； Labview； 信号发生器

Abstract：Along with the development of the microcomputer, compared with traditional instrument, the virtual instrument has the obvious technical advantage in knowledge ware, processing capability, the ratio between function and price, and Maneuver ability. The introduction of the virtual instrument to the university can not only increase the efficiency and quality of testing, teaching, but also provide the effective method to reduce the cost of the experiment instrument. 

　　In this paper, selected Labview graphical programming language for software development, mainly the development of virtual experiment equipment, virtual signal generator, virtual laboratory also made the building program.Virtual Function Signal Generator is designed Based on Labview, The first Virtual Function Signal Generator can generate Sine wave, triangle wave, square wave, teeth of a saw wave,and two complex waves.

Key words : Virtual Instrument;  Labview;  Signal Generator