Abstract: When designing an arbitrary radix counter, if the number of Radix N to be designed is greater than the maximum number M of the integrated counting chip, it is necessary to use multiple chips to achieve it through synchronous cascading or asynchronous cascading. The arbitrary radix counter designed by the asynchronous cascading method, in the software simulation, due to software bugs, does not start counting from 00, but from 10. This paper guides students to add the 1 elimination function to the design circuit to solve this problem, so as to achieve the purpose of training students’ practical ability. Taking the integrated counter chip 74160 as an example, this paper discusses several methods of eliminating 1 in the simulation software.