本代码是用c语言编写的生日快乐哥，利用单片机的蜂鸣器可以很好的演示。-This code is c language, happy birthday brother, the buzzer can use microcontroller demo.

vb遥控音乐播放器程序，采用红外接手头接收遥控信息，然后由单片机去控制蜂鸣器发声。-vb control communication

基于Android开发的红外遥控APP; APP通过红外线控制灯的开/关，选框，蜂鸣器，风扇等。(Based on Android developed infrared remote control APP; APP through the infrared to control the light on / off, marquee, buzzer, fan and so on.)