PIC的学习文件，可以供初学者学习，使用的是C语言编程，还比较实用...

STM32通用精确us延时函数；包含标准库和HAL库两种，直接声明调用即可。(STM32 HAL library common precision us delay function; standard library to use as long as the corresponding parameter variable to standard library format can be.)

里面是完整的 407 外部中断程序。整个工程

QR二维码编码与解码，（二维码的生成、二维码的读取识别、乱码问题解决方法）(QR code coding and decoding)

ReportMachine VB,VB.net,C# 的调用例子，使用，可以实现，打印预览，设计报表，直接打印等

内含数据，代码分为两个文件，分别为Matlab中自带函数实现，以及我自己编写的函数实现，以作对比

 This simple library allows control of switch reluctance motors such  as those found in hard disks. It provides varying degrees of precision  assuming three phases.    Library also supports rudimentary speed control which allows programmers  to control motor speed without resorting to usage of `delay`. This is done   through setting speed measured in revolutions per minute and calling  `motor_step` or `motor_step_backward` frequently. State of pins will be  updated only after specific time has passed. Speed control does take into  account sequence sizes, so no additional calculation is needed.

三階拉格朗日內差法。使用了Farrow結構，簡化三階多項式係數之運算。(third-order Lagrange interpolation algorithm. use Farrow structure to simplify the coefficients of the polynomial of Lagrange method.)

简单的抽奖程序，没有任何第三方控件，可以直接使用

说明：  A*算法机器人路径规划，利用matlab仿真实现。(A* algorithm robot path planning, and MATLAB simulation is used to realize.)

试用Newton插值多项式计算f(1.13)的近似值(Trial of Newton interpolation approximation of polynomial computation f1.13 )