基于arm的蜂鸣器奏乐，可按键实现7个音 也可下载音乐文件进行读取，播放。文件包括原理图和pcb图。不包括语言实现-Play music on the arm of the buzzer, to achieve the seven sound buttons can also download music files to read, play. File includes schematic and pcb diagram

基于qt的 串口程序。可实现完美读写。花了我不少时间-Qt-based serial procedures. Can achieve the perfect read and write.

AT24C08芯片在2440上的裸板程序,可实现读写数据- The bare board program for AT24C08 in 2440，and it can read and write data