将视频窗口扩大2倍

该频率计用的是AT89c52单片机，T0做计数器，T1做定时。低于100Hz使用测周法测量频率，高于100Hz使用测频法测量，原理清晰易懂，硬件结构非常简单。

一个用C#编的产品配置系统，应用了sql server，附源代码-A used C# Series of product configuration systems, applications of the sql server, attached to the source code

飞思卡尔比赛资料，不怎么样，大家看看就算了(Freescale game data, not very good, take a look even if the)

用于 tcp udp网络调试 tcp服务端支持多线程  udp支持单播 组播和广播

请仔细查看并使用，这是我自己写的UDP通信测试程序，UDP在工业场合应用非常广泛，短小精悍，非常实用，是在VS2010下编写并编译的，希望大家踊跃下载使用，并且有其他问题及时联系沟通。

该程序是数据结构中以链表存储形式来求两个集合的交集，用C++语言描述的(The program is the form of a linked list stored in the data structures to seek the intersection of two sets, C++ language to describe)

c语言通讯录源代码，功能一般，不够完善，很，简单适合，初学者可以看，我是为了打作业才上呢(c language directory source code, functional and not perfect, really, for a simple, beginners can see, I will work to fight on?)

MPPT太阳能充电程序，AVR单片机主控ATMEGA32(MPPT solar charge program, AVR microcontroller master ATMEGA32)

The book is organized in the form of question and answer, and discusses some of the problems often encountered in the process of learning or using the C language. For reference, not commercially available

能够输出50kHZ,占空比50%的带死区的互补PWM(Complementary PWM with dead zone and 50% duty cycle can output 50kHZ)