In this paper, structure and working principle of the IVI model of virtual instrument driver are given, and furthermore the GPIB bus oscillograph driver based on IVI model is designed in LabWindows/ CVI 8.0 environment.

• 本文介绍了IVI模型的结构和工作原理；并在Lab Windows/CVI8.；0的开发环境中设计了基于该模型的GPIB总线虚拟示波器的驱动程序。