C语言编程，4*4按键程序，并配有proteus仿真文件-C programming language, 4* 4 key procedures, and with proteus simulation file

protues仿真实验室的构建 详细分析了在protues环境下建立仿真实验室的一些关键部分-Construction of Protues simulation laboratory established a detailed analysis of some key parts of the simulation laboratory in Protues environment