利用单片机设计电子琴，在弹奏的时候同时显示所弹奏的音符。其中包括附有PROTUES的仿真电路图和用汇编编写的程序。-The use of microcontroller design keyboard, at the time when playing the notes indicate the play. These include the simulation with PROTUES circuit diagram and a program written in assembler.