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说明：  stm32制作简易信号源，产生方波三角波和正弦波(STM32 makes simple signal source to produce square wave triangle wave and sine wave)

实时时钟（数码管）,可实现数码管闪烁效果。带闹钟功能。 proteus仿真(Reail Time Reail Time Reail Time Reail Time)

说明：  一个自写的ClistCtrl打印类，直接引用就行(a written ClistCtrl Print category applied directly on the line)

说明：  HC-SR04超声波程序，在f103上测试过(HC-SR04 ultrasonic program, tested on F103)

说明：  基于SPMC75的变频电机驱动例子,相当于一个简单的变频器. 望对变频器开发的工程式师有一定的帮助!(SPMC75 based on the frequency motor drive examples, the equivalent of a simple inverter. look for the development of inverter-type division works can help!)

说明：  超声波测距原理图\硬件资料\cailiaoqingdan.rar(Ultrasonic Ranging schematic \ hardware information \ cailiaoqingdan.rar)

蓄电池的充放电控制，能够有效的进行控制，高效稳定(Battery charge and discharge control)

STM32关于体温传感器hal库的说明以及源码和用例实例(STM32 About Hal Library of Body Temperature Sensor)

这是基于stm32f407的编码器程序，能够实现单片机对编码器的控制并把数据用串口发回电脑(This is the code based on stm32f407 to control encoder and return the data to pc when succeed)

说明：  基于MODBUS协议的单片机通信系统，上位机+下位机(MODBUS Protocol-based communication system microcontroller)