以通过单片机按键弹奏乐曲单片机采用打字,

喜欢VHDL的朋友可以下了看下-51 single-chip experiment with the program hope you can help, including Happy Valley decimal significant organ

SCM keyboard, using the 89C52 microcontroller button to play music microcontroller.

On the keyboard VHDL applet, like VHDL friends can next look, learn from