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自动弹出选择框并自动选择的复选框(The combobox which can popup selector dialog and select automatically)

说明：  一个com的入门教程——杨老的com教程(An introductory tutorial com- Yanglao the com tutorial)

逻辑分析仪，相位和频率分析，可以实现对喜欢冒险分析，频率范围的问题，使用MSP430微控制器(Logic analyzer, phase, and frequency analysis can be achieved on issues like adventure analysis, frequency range, using the MSP430 microcontroller)

As the figure above illustrates, a phase accumulator compares the sample clock and desired frequency to increment a phase register. Again, the fundamental idea is that we can generate signals with precise frequencies by generating an appropriate sample based on the phase of that frequency at any point in time. In addition, by representing our waveform with 214 (16,384) points, we are able to represent exactly 16,384 phase increments with our lookup table.

电磁计算用的快速多级子算法，欢迎大家下载交流(Fast multilevel sub algorithm for electromagnetic computation)

深度优先搜索（缩写DFS）有点类似广度优先搜索，也是对一个连通图进行遍历的算法。它的思想是从一个顶点V0开始，沿着一条路一直走到底，如果发现不能到达目标解，那就返回到上一个节点，然后从另一条路开始走到底，这种尽量往深处走的概念即是深度优先的概念。

keil uVision project, read SD card from slot on microcontroller ZL9 ARM witg LPC 2148 processor. theres a hex file and whole uVision project with editing enable

104规约测试程序，经过现场检验实践过的，很好用，编译环境VC6(104 statute test procedure, after the test of practice, very friendly, compile environment VC6 )

利用该源码程序可在归一化频率轴上绘出归一化的功率谱曲线。(Use of the source program can be in the normalized frequency axis mapping normalized power spectral curve.)

实现W5500自动获取IP地址和网关等的功能。( Achieve W5500 automatically obtain IP address and gateway functions etc..)