通过按键喂狗防止溢出复位 看门狗演示程序

在16383个机器周期内必须至少喂狗一次

标准AT89s52单片机试验通过。-Feed the dog through the key demo program to prevent overflow reset the watchdog

               　In the 16383 machine cycle to feed the dog must be at least once a

               　Standard AT89s52 chip test passed.