本文给出了乒乓球比赛模拟及计分器的功能设计和原理框图，建立了各功能模块的模型，分析了其设计原理和实现方法。在设计中，充分利用了CD4017计数器的功能和发光二极管实现对乒乓球运动轨迹的模拟-In this paper, simulation and table tennis scoring device block diagram of the functional design and built a model of each functional module, analyzes its design principles and implementation. In the design, full use of the CD4017 counter function and the light-emitting diode on the table tennis simulation trajectory