建立歌曲文档,按演唱者排序,程序可接收查找的演唱者,并输出其所有的歌曲-documents establishing songs by singers, in order of search procedures can receive a concert, and exported all of its songs
单片机的入门小程序,用它来来扫描键盘,并根据不同的按键方式,显示不同流水灯-Procedures for the entry of small single-chip, to use it to scan the keyboard and buttons according to different methods show different water lights