In terms of the current teaching condition of signal and system and the flaws of the virtual experimental platform, the virtual experimental system of signal and system was developed through combining theory and practice under the Matlab and Visual Basic environment. 针对当前《信号与系统》的教学境况和虚拟实验平台存在的不足，在Matlab和VISUALBASIC软件环境下，结合实物实验内容，开发了《信号与系统》虚拟实验系统。
A courseware for demonstrating the animation of link mechanism used in machine theory CAI was developed under Visual Basic environment. The simulation and control of the movement were achieved. 利用VISUALBASIC平台研制了连杆机构动画演示系统的CAI课件，实现了机构动画的计算机模拟运动和仿真控制。
As a practical industrial standard, OpenGL is widely used in the 2D or 3D graphics programming in the C language environment. But there are few references about how to use it in the Visual Basic environment. OpenGL作为事实的工业标准，广泛地应用于二维和三维图形的编程中，但大多工作于C语言的环境下，如何在VB环境下使用它，相关的参考文献较少。
Through specific examples of quantitative comparative study, educe a method to rapidly access the database of images in the Visual Basic environment. For other multimedia information access and programming environments, it is a certain role. 本文通过具体实例量化比较研究，得出在VISUALBASIC环境下快速数据库图像存取的方法，对于其他多媒体信息存取与编程环境也有一定的借鉴作用。
The OPC client is exploited under Visual Basic environment through OPC automation interfaces with OPC specification, and generator fault monitoring code data acquisition is implemented. Finally, the conclusions are drawn and the development and application of this system are forecasted. OPC客户端应用程序用VISUALBASIC开发，通过OPC自动化接口，利用OPC协议来读写服务器数据，实现电机故障监测程序的数据采集，最后给出结论展望了此系统的开发与应用前景。
