C# ListBox拒绝添加重复信息

供参考学习，互相交流用，有助于开拓视野，增加知识面。(For information, learn, communicate with each other, help to broaden their horizons and increase their knowledge.)

用EVC开发的贪吃蛇游戏，能在WINCE平台下运行(。-Snake game with EVC development can run in WINCE platform)

opencv基础版的源代码2-1，2-2(opencv-based version of the source code 2-1,2-2)

Arduino ps2 master...

说明：  ETC中文对照，对于简单的方式，用这个即可(Chinese control, ETC for a simple way, use this)

串口接受一般输入的数据，发送数据并以不同格式接受接受

输入一个矩阵，可以求得该矩阵的逆矩阵，内附解释说明(Enter a matrix, you can obtain the inverse matrix, containing an explanation)

对信号进行小波包分解，得到节点的小波包系数。然后对每个节点系数进行重构。(Wavelet packet decomposition is used to get the wavelet packet coefficients of the nodes. Then the coefficients of each node are reconstructed.)

240128液晶初始化程序，调用子函数，有详细注释(240128 LCD initial program, call the son function, and have the detailed notes )

说明：  利用ATmega128控制实时日历时钟PCF8563(Control the use of real-time calendar clock PCF8563 ATmega128)