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毕业设计时做DC600V逆变器测试系统，采用工控机为主控制器，PCL-818数据采集卡， VC++作编程工具，对25T、25k型客车使用的逆变器进行性能测试。(Graduation time to do DC600V inverter test system, IPC-based controller, PCL-818 data acquisition card, VC++ as a programming tool, 25T, 25k bus-type inverter used for performance testing.)

Visual Studio C++ 编程入门 全局变量(Visual Studio C++ programming entry of global variables)

at91sam7a3在iar下的sdcard例程，调试通过，可以作为学习参考(at91sam7a3 the sdcard routine, under the iar through debugging, can be used as a study reference)

本程序，专为个人主页，以及公司的小型博客，以及小型门户网站设计，易结合，其主中包括有三个程序，会员、日志、评论、以及个人相册 此版本为最原始的试用版，其中有很多功能还在完善中。(This program, designed for personal home page, and the company' s small blog, and a small portal site design, easy integration, including its three main programs, members, posts, comments, and personal album in this version of the original trial, in which Many features are still perfecting.)

一个典型的Select IO 模型实例源代码，供大家参考使用，要下从速！(A typical model Select IO source code examples for your use and reference to the next as soon as possible!)

实现留言板,可以提供新用户的使用，主要体现的是文件的使用性(Achieving message boards can provide new users use, mainly is the file used)

sine signal graphic visual c++ platform?????enter the frequency and the amplitude

实现声音导引小车运动，智能小车程序C51代码(Achieve sound AGV Sport, smart car program code C51)

一个安卓开发的即时通信客户端和服务器端软件。(android client and java sever IM)

步进电机是将电脉冲信号转变为角位移或线位移的开环控制电机，是现代数字程序控制系统中的主要执行元件，应用极为广泛。。在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，当步进驱动器接收到一个脉冲信号，它就驱动步进电机按设定的方向转动一个固定的角度，称为“步距角”，它的旋转是以固定的角度一步一步运行的。可以通过控制脉冲个数来控制角位移量，从而达到准确定位的目的；同时可以通过控制脉冲频率来控制电机转动的速度和加速度，从而达到调速的目的。(Stepper motor is an open loop control motor which transforms electrical pulse signal into angular displacement or linear displacement. It is the main executive element in modern digital control system, and is widely applied. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. We can control the angular displacement by controlling the number of pulses, so as to achieve the goal of accurate positioning. At the same time, we can control the speed and acceleration of motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation.)