FIRFilter

风格的网格布局css画廊。网格布局采用mnry制作，(Style grid layout CSS gallery. The grid layout is made by mnry.)

超声换能器阵元的延时，可根据具体阵元进行相对于的计算(Transducer element delay)

VB初级练习源码适合刚学习VB的人练习-VB source code of primary practice

Ascii Art Graphics software

CAD2006工具面板（可停靠，像QQ一样隐藏）(CAD2006 tool panel (docked, hidden like QQ) CAD2006 tool panel (docked, hidden like QQ))

说明：  采用主成分分析法判断了北京2000-2010年的经济活力。采用遗传算法优化的神经元网络模型评估10个城市的经济活力，马尔可夫灰度预测预测未来5年的发展状况。(The economic vitality of Beijing from 2000 to 2010 was judged by principal component analysis. The neural network model optimized by genetic algorithm is used to evaluate the economic vitality of 10 cities, and Markov grey prediction is used to predict the development of the next 5 years.)

GPS中的伪随机码产生程序,用matlab仿真生成伪随机码序列,用于测距(GPS in the pseudo-random code generation process, using matlab simulation to generate pseudo-random code sequence, for Ranging)

说明：  一个abaqus的vumat子程序，在一个模型中两种用户自定义材料。(A ABAQUS VUMAT subroutine, two user-defined materials in a model.)

绝对位置编码器biss与FPGA之间的通信(Absolute position encoder biss communication with FPGA)

sdl的gfx开发包，做游戏必备-sdl the gfx development kits, games must