非常实用的通过电脑串口通信控制ARM芯片的音乐发生器

单项循环链表，可以进行添加和删除节点，并且可以在任意的地方把它改为带环的链表-Single circular linked list, you can add and delete nodes, and in any place it into a belt loop linked list

实现输入一串数字，然后matlab可以将数字对应的蜂鸣音播放出来（类似于电话的拨号）-Achieve input a string of numbers, then you can figure corresponding matlab beep play out (similar to dial-up phone)

演奏乐曲《小星星》《茉莉花》《找朋友》《上学歌》《一分钱》《征服》《沧海一声笑》《童话》《同桌的你》《小熊和洋娃娃》-Playing music "Little Star" "Jasmine", "find friends", "school song", "penny" "conquer" "Laughter In The Sea" "fairy tale", "same table for you," "Winnie and dolls"