This dissertation discusses the implementation of virtual oscillograph and virtual inductance micrometer. It analyses the sampling theorem and the different mode in Dos and Windows, accomplishing a signal acquisition system in Win32 operation system.

• 本文以低频虚拟示波器和虚拟电感测微仪为主要研究对象，从采样定理入手，分析了Dos下和Windows下的不同模式，论述了基于虚拟仪器概念的信号采集系统在Windows2000操作系统中的实现方案。