用不同的算法来实现SPWM脉宽调制变频器，用了等面积法，不对称和对称采样法，自然采样法1-Use different algorithms to achieve SPWM pulse width modulation frequency, with the other area of ​ ​ law, asymmetric and symmetric sampling, natural sampling 1

三种SPWM算法在MSP430单片机上的实现，内含详细的算法分析，包括对称规则采样法，不对称规则采样法，等效面积法-Three SPWM algorithm on the MSP430 MCU to achieve, including a detailed analysis of algorithms, including symmetric regular sampling method, asymmetric regular sampling method, the equivalent

keil c 实现轻量级对称密码算法SPECK-keil c implementation for SPECK, a lightweight cryptographic algorithm proposed by NSA.

一个圆形的表盘，没用库函数，全是自己写的。直线用的brensenham算法，曲线用的坐标对称，编程的时候挺费劲的。(A circular dial, not using the library function, is all written by himself. The brensenham algorithm used in the straight line, the coordinate symmetry of the curve, is difficult when programm