在现行的理工科教学中,matlab的应用已经成为一个重要的内容.尤其在电子类的核心专业课信号与系统中,matlab的作用更加值得教师关注.文章就信号与系统这一课程中牵涉到的一些典型matlab程序,进行了注解和说明.试图在信号与系统和matlab的应用两方面找到了一个更为恰当的结合点,使学生和教师在专业知识和应用性工具方面,得到一个更好的处理方式.-In the current teaching of science and engineering, matlab application has become an important element, especially in the core Specialized Signals and Systems electronic class, matlab role of the teacher is more worthy of attention. Article on signals and systems involved in this course Some typical matlab procedures, annotations and notes. trying to find a more appropriate combination of points in the signal system and matlab applications in terms of both students and teachers in the application of professional knowledge and tools to get a better treatment.