DES是一种分组密码。假定明文m是由0和1组成的长度为64位的符号串，密钥k也是64位的0、1符号串。...

4*4键盘扫描，依据键值，8个LED显示相应键值-4* 4 keyboard scanning, based on keys, 8 LED display the corresponding key

很好的资料 很好的资料 很好的资料 -good goodgoodgoodgoodgood

用于并行接口实验，运行环境为Winxp Xingyan 集成环境-Parallel Interface for the experiment, operating environment integrated environment for Winxp Xingyan

8052单片机和计算机串口通信的试验。已经成功演示，上位机用的是vb写的程序。-8052 single-chip serial communication and computer tests. Have successfully demonstration PC using a program written in vb.

c和c++代码精粹，这是一个pdg格式的文档，请使用超星的最新版本打开，很难得的文档，是vip会员的资料，先睹为快吧:)-c and c++ code essence, this is a PDG format document, please use the latest version of Chaoxing open, it is difficult to get the documents, is vip membership information, preview it:)

test upload and LED

这是一个音乐程序，大写字母a，唱歌，玛丽只有一只小羊羔，按大写字母B，唱歌，太湖船，按大写字母C，唱歌，祝福之歌，按Q键，退出

一种实现电磁波的FDTD仿真模拟的源程序代码-An FDTD simulation of electromagnetic waves of the source code

SED1521DAA和KS0107组合的160*32的LCD显示程式-SED1521DAA and KS0107 portfolio of 160* 32 LCD display program

可以实现自动升降旗系统功能的汇编源码，欢迎大家下载使用，很容易理解。-Take-off and landing can be achieved automatically flag the compilation of source system are welcome to download the U.S. use, it is easy to understand.