本文介绍了用于电子电路仿真与设计的EDA工具软件——Multisim7的主要功能和特点。在Multisim7环境下，采用计数器设计实例，对结果进行仿真研究。

This article introduces the main functions and features of Multisim7，which is a kind of EDA tools，used for design and simulation of electronic circuit．In the environment of Multisim7，it takes counter as an example and studies the simulation results．