电子琴程序设计与仿真。包括顶层程序与仿真，音阶发生器程序与仿真，数控分频模块程序与仿真，自动演奏模块程序与仿真。-Organ program design and simulation. Including the top-level procedures and simulation, scale generator, procedures and simulation, numerical control program and simulation of frequency module, auto-playing and simulation module program.