为了生动直观地向学生讲授组合逻辑电路中的竞争—冒险现象，基于Proteus仿真软件搭建了仿真模块电路，对 电路竞争—冒险的产生与消除进行了仿真实验测试，软件界面清晰展现了竞争—冒险的尖峰脉冲及消除结果。教学实践表 明，通过仿真学生直观地观察到竞争—冒险产生的过程及采取不同措施后竞争—冒险的消除，为学生提供了学习理解竞争— 冒险现象的新场景，提高了教学效果。

In order to teach students more intuitively the phenomenon of race-hazard in combinational logic circuits, this study builds a simulation module circuit based on Proteus simulation software, and carries out simulation experiments to test the generation and elimination of circuit race-hazard. The simulation interface clearly displays the peak pulse of race-hazard, as well as the elimination results. Through this simulation module circuit, students not only observe the process of race-hazard more intuitively, but also can take different measures to eliminate circuit race-hazard. Teaching practice shows that the simulation module circuit provides a new scene for students to learn and understand the race-hazard phenomenon, thus improving the teaching effect.