10399903

说明：  Pycom shield board pcb design

日历的生成，可以进行标注日期，备注日期提醒。(Calendar of generation can be dated, notes the date reminder.)

说明：  输入质量和刚度，可以求得固有频率，可以调整刚度和质量矩阵的维数(By inputting mass and stiffness, the natural frequency can be obtained, and the dimension of stiffness and mass matrix can be adjusted)

关于最新的边界元快速算法的专著，提出了一种代数方法来加快边界元方程组的求解。值得一看。(Boundary Element Methods (BEM) play an important role in modern numer- ical computations in the applied and engineering sciences. Such algorithms are often more convenient than the traditional Finite Element Method (FEM), since the corresponding equations are formulated on the boundary, and, there- fore, a signifi cant reduction of dimensionality takes place. Especially when the physical description of the problem leads to an unbounded domain, traditional methods like FEM become unalluring)

此为民意调查，用户可以进行再线投票，并查看统计结果。-to this poll, users can re-line vote, and to see results.

说明：  直流降压电路 用于直流到直流的转换(DC buck circuit is used for DC to DC conversion)

说明：  数字信号处理_第四版_Sanjit_课后答案[2-7章，英文版]_khdaw(Digital Signal Processing 4th Edition Sanjit After-class Answers [Chapter 2-7, English Edition] _khdaw)

使用卡尔曼滤波器算法预测并跟踪目标轨迹的仿真程序(Predicting and Tracking Target Trajectory Using Kalman Filter Algorithms)

小妖在线投票系统-Xiaojiao online voting system

MusicBox Android原生音乐盒代码-音乐播放器，注册自己的BroadcastReciever 即 MyMusicBroadcastReciever，代码完整，源码包有8M，耐心下载哦。学习下安卓中的音乐播放功能的编写方法，对想学android应用开发的朋友来说，这个例子相当不错。