Lowpass filter design

说明：  plc电梯编程模拟，适用于博途15,1200plc编程(PLC elevator programming simulation)

说明：  RTD2260芯片手册，该芯片支持VGA，HDMI，DVI等多种格式输入，LVDS输出连接液晶屏，内部集成单片机，可以做OSD菜单(RTD2260 chip manual, the chip supports VGA, HDMI, DVI and other forms of input, LVDS output connected to the LCD screen, internal integration of microcontroller, can do OSD menu)

使用C++编写的模拟彩票的程序，有三种不同的彩票类型，正在学习C++的同学可以下载参考一下。-The use of C++ Prepared lottery simulation procedures, the Lottery has three different types, are learning to C++ Students can download the reference.

seg2格式数据读取，自编，经过测试，完全正确，作者姓名缩写wnc()

说明：  基于图像处理的QR码解码技术，并对QR码解码算法进行详细设计与改进(QR decoding technology based on image processing and detailed design and improvement of QR decoding algorithm)

说明：  这个程序用于MATLAB中，可以打开多个TXT文件，并保存成mat格式的文件，接着继续绘制图形，最后根据曲线的情况，可以进行最小二乘的拟合。(This program is used in MATLAB. It can open multiple TXT files and save them in mat format. Then it can continue to draw graphics. Finally, according to the situation of the curve, it can be fitted by least squares.)

基于python的扫雷小游戏，不需要安装其他库(Minesweeper game based on python.)

Tamura纹理特征的六个分量对应于心理学角度上纹理特征的六种属性，分别是粗糙度（coarseness）、对比度（contrast）、方向度（directionality）、 线像度（linelikeness）、规整度（regularity）和粗略度（roughness）。其中，前三个分量对于图像检索尤其重要。(The six components of the Tamura texture feature correspond to the six properties of the texture feature in the psychological perspective, namely, coarseness, contrast, directionality, linelikeness, and regularity. and roughness. Among them, the first three components are especially important for image retrieval.)

12864液晶驱动，控制器ST6575R(12864 LCD driver, controller ST6575R)

七段数万管共阴极显示模块及独立键盘硬件连接图。-Seven-Segment total tens of thousands of cathode tube display module and independent hardware keyboard connection diagram.