in-vehicle-GPS-navigation-system

基于FRDM-KL25Z及简单运放（LM324）设计出了一套小巧、低成本的心电监测装置。它不但能够结合上位机实时显示心电图而且能够将采集的心电信号储存于SD卡，用于24h心电监护，以备观察不同时间段心血管疾病的症状。(FRDM-KL25Z and simple operational amplifier (LM324) based on the designed ECG monitoring device with a set of small, low cost. It can not only combine with the real-time display of the host computer and can store the collected ECG signals in SD card for 24h ECG monitoring for the observation of the symptoms of cardiovascular diseases at different time periods. )

用单片机对遥控器实现解码，并在数码管上显示(Infrare Decoder)

说明：  　　 paek变换 park转换，也称派克变换，英文为Park transformation,为现在占主流地位的交流电机分析计算时的基本变换。在电力系统分析和计算中，park转换具有重要的理论和实际意义。(paek transform park conversion, also known as Park transformation, the English for the Park transformation, for the now dominant in the calculation of AC motor analysis of the basic transformation. In power system analysis and calculations, park conversion has important theoretical and practical significance.)

好的声文同步程序，值得学习，适合于初学者，给大家共同分享(Good sound text synchronization process, it is worth learning, suitable for beginners, for everyone to share)

AD9851驱动程序，采用串行写入方式，STM32写入频率控制字。(AD9851 driver, using serial write mode, STM32 write frequency control word.)

说明：  VB串口通讯实例 高精度电压表(24bit) VB源程序(VB serial communication example high precision voltage meter (24bit) VB source code)

msp430单片机DS18B20温度程序(Msp430 single chip DS18B20 temperature program)

RS485通信的源代码，可进行两个系统之间信号的传递，介绍其编程规则(RS485 communications source code, can be passed between the two signal systems, introduces its programming rules)

基于单片机和C语言的，步进电机加速减速匀速演示，希望方便大家(Based on SCM and C language, stepper motor acceleration and deceleration uniform presentation, I hope to facilitate)

C++ 语言命令详解(第二版) 全书由两大部分及四个附录和一个词汇表构成,第一部分介绍 C++的基本概念以及C++程序设计方法,这部分从C++最基本的概念讲 起,覆盖最新C++标准中的所有概念并重点介绍类及其有关的函数和 运算符.第二部分可以用于C++编程的参考,分别详细介绍数据类型, 运算符,类型转换,关键字,预处理指令以及库函数和库类.四个附录 分别介绍C/C++的区别,ANSI 及C++成员的速查表.本书最后有C++术 语及概念的词汇表.本书可以用作学习C++的标准教材,也可成为高 级程序员的有价值的参考书.(Detailed C++ language commands (Second Edition))