用verilog硬件描述语言编写的电子琴工程，实现手动弹奏21个音符，自动播放内置音乐，在显示器上模拟显示按键等功能。-Using verilog hardware descr iption language organ works, play 21 notes for manual, automatic built-in music player, analog display buttons on the monitor and other functions.