Abstract: The conception, structure, features and t endency of virtual instruments are introduced and the method of forming a virtu al oscilloscope and signal generator are introduced.

• 文摘:论述了虚拟仪器技术概念、特点及其发展趋势；并分析了虚拟仪器的结构及虚拟示波器和信号源的构建方法.