单片机控制的蜂鸣器演奏生日歌！ 适合初学C语言及单片机的学者使用！-Microcontroller buzzer to play a birthday song! Suitable for novice C language SCM and scholars use!

C#调用主板蜂鸣器发声,Win7x64可用！ 编译时请用X86并允许不安全代码(C # calling motherboard buzzer sound, Win7x64 available! Please use X86 at compile time and allow unsafe code)