旋转编码的代码，编码器是ALPS的带开关，此程序直接可以移植到数字功放用于做音量调节。使用的是AVR单片机，同时有FD650做显示；欢迎大家下载。-The rotary encoder of the code, the encoder is the ALPS with switch, this program can be transferred directly to the digital power amplifier used to do to adjust the volume. Us