这是一个基于89C51单片机的简易信号发生器的源程序，程序代码由C语言编写-This is an 89C51 microcontroller based on the simplicity of the source signal generator, code written in C

8951单片机的简易信号发生器源程序，可以输出不同的波形。(The simple signal generator source program of 8951 singlechip can output different waveforms.)