基于80C51单片机的定时器应用程序。本程序实现的功能为：同时用两个定时器控制蜂鸣器发声，定时器0控制频率，定时器1控制同个频率持续的时间，间隔300ms依次输出1，10，50,100，200,400,800,

1k（hz）的方波-80C51 microcontroller based timer application. The program implementation functions: while the timer control with two buzzer, timer 0 control frequency, the Timer 1 control with a frequency of duration, interval 300ms turn out 1,10,50,100,200,400,800, 1k (hz) square wave