基于虚拟仪器的概念，通过GPIB接口总线实现PC机与可编程仪器的通信。虚拟示波器较传统的示波器，大大降低了成本，而且使用起来方便，需调用一个VI，就可以完全实现传统示波器的功能。本文介绍了虚拟仪器的GPIB总线接口技术。-Based on the concept of virtual instruments through GPIB bus interface and PC-programmable communications apparatus. Virtual Oscilloscope Oscilloscopes more traditional, much lower cost, and easy to use, need to call a VI, will be the full realization of the functions of traditional oscilloscope. This paper introduces the Virtual Instrument GPIB bus interface technology.