时序线路是数字系统逻辑设计的重要组成部分,在电子计算机、信息处理、数字仪表、数控机床、机器人等各种自动控制系统中有着广泛的应用.目前设计时序线路常用的方法尽管步骤不尽相同,但都先选定触发器的类型,根据该触发器的转换表填写卡诺图或激励矩阵.这样求得的卡诺图或激励矩阵,只适用于选定的触发 Timing circuit is an important part of logic design of digital system, and it has a wide range of applications in a variety of automatic control systems such as computer, information processing, digital instrumentation, CNC machine tools, robots etc. At present, the methods used to design sequential circuits are not the same , But first select the type of flip-flop, fill it with a Karnaugh map or excitation matrix based on the flip-flop's conversion table. The resulting Karnaugh map or excitation matrix is ​​only valid for the selected trigger