QX_He

基于51单片机的音乐程序，12MHZ晶振(51 MCU-based music programs, 12MHZ crystal oscillator)

仿真过程中，将改进算法那与经典算法进行比较，通过对仿真数据如系统时延、系统丢包概率以及系统吞吐量的比较分析，评估改进算法的正确性和性能。(Simulation process, the improved algorithm that compares with the classical algorithm, through the simulation data system latency, packet loss probability of the system as well as a comparative analysis system throughput, improved assessment of the correctness and performance of the algorithm.)

一维数组实现01背包问题和完全背包问题的C语言解，注释清楚(C Language Annotation of 01 Knapsack Problem and Complete Knapsack Problem for One-Dimensional Array with Clear Annotations)

说明：  LLC电路的PI闭环程序，实现电流闭环，非常稳定经过实测，没有问题(The PI closed-loop program of LLC circuit realizes the current closed-loop, which is very stable. After actual measurement, there is no problem)

提供STM32F4的硬件I2C配置,直接包含即可用.开发环境为MDK,(Provide STM32F4 hardware I2C configuration, you can use the included directly. Development environment for the MDK,)

单片机通过PWM输出供电，驱动3个串联电阻，其中50K是一个电位器，人为不断的旋动电位器，来模拟负载无规律的变化。 目标要求：100uF电容两端的电压不受负载的影响，即ADC读数要求稳定在100左右。 大概的输出电压mV = 5000mV * ADC读数 / 255 调整 P、I、D 这三个系数，还有调整间隔检测时间，即可调整负载电压的稳定度和皱纹度。 (单片机通过PWM输出供电，驱动3个串联电阻，其中50K是一个电位器，人为不断的旋动电位器，来模拟负载无规律的变化。 目标要求：100uF电容两端的电压不受负载的影响，即ADC读数要求稳定在100左右。 大概的输出电压mV = 5000mV* ADC读数/255 调整 P、I、D 这三个系数，还有调整间隔检测时间，即可调整负载电压的稳定度和皱纹度。 )

microcontroller programing

实现RC522射频芯片的读写，扣费，注册，和充值等功能，51单片机绝得可以用(RC522 RF chip to read and write, chargeback, registration, and recharge function, 51 MCU must have to be able to use)

ICCAVR 编写的mega16矩阵键盘测试程序(ICCAVRmega16 matrix keyboard driver)

说明：  Fir_filter stm32,keilC v5