利用单片机及pc机串口实现接收发字符，通过串口调试助手能看到键盘上发出的字符。利用keilc编写的单片机与pc机的通信程序。-And the use of single-chip receiver implementation pc machine serial hair characters, through the serial debug aide sent to see the characters on the keyboard. Keilc prepared using single

北京航空航天大学计算机学院高性能计算体系结构课程PPT，祝明发教授讲解，其内容丰富，可供正在学习并行计算、高性能计算体系结构及云计算等的同学参考。-Beijing University of Aeronautics and Astronautics School of Computer Science high performance computing architecture courses PPT, ZHU hair professors to speak, its rich conten

朋友给我发的一个 快递的表格，说是做市场调查的。。在这里上传，希望人人看了之后 能够避免这些无聊的事。-Friends give I hair a express delivery form, say the market research. Here, hope everyone see the upload to avoid these bored after.

Previous works have shown that the ear is a promising candidate for biometric identification. However, in prior work, the preprocessing of ear images has had manual steps and algorithms have not necessarily handled problems caused by hair and ear