基于protues的LED点阵显示仿真,包括keil的c语言源程序和protues的原理图，并有详细的说明解释。-LED dot matrix display based on protues of simulation, including keil c-language source code and protues the schematic, and detailed explanations.

用数码管测频率，用四个74HC573实现16*16点阵显示任意字，包括程序，原理图的仿真-16* 16 dot matrix display any word, including procedures schematic simulation with four 74HC573 digital tube measured frequency