用计数器中断实现100以内的按键计数，包含源代码和proteus电路仿真，值得一看。-Counter interrupt button count less than 100, contains the source code and proteus circuit simulation, worth a visit.

单片机C语言程序设计实训100例——基于8051 Proteus仿真-Microcontroller C Programming Language Training 100 cases- based on 8051 Proteus simulation

100个proteus运行文件，完美运行，课件可用-100 proteus run files, perfect run, courseware available