用s3c2410 开发板开发的一个触摸屏电子琴，有中，低，高三个音阶，总共21个按键，可以弹奏音乐，还有测试歌曲。-S3c2410 development board developed with a touch-screen keyboard, there are medium, low, high three scales, a total of 21 keys that can play music, as well as test songs.