graph_c

说明：  一个好的P2P即时通讯程序源码，包含服务器端和客户端。(A good source P2P instant messaging program, including server-side and client.)

UHF读写器读写器简介 本产品具有多协议兼容、体积小、读取速率快、多标签识读、圆极化天线对标签没有方向限制、防水型外观设计等优点，可广泛的应用于各种RFID系统中，典型的应用场合有：  (UHF reader reader Introduction The product is compatible with multi-protocol, small volume, read rate, and multi-tag read, circularly polarized antenna on the label does not limit the direction, waterproof design, etc., can be widely used in a variety of RFID systems, typical applications are:  )

通过单片机按键选择输出信号类型及要求输出量,在LED显示器件上指示信号类型及设定数值.系统工作电源±15V ， ±5V 。恒流电流输出0.0～8.0mA, 负载电阻≤500Ω。3． 稳压电压输出0.0～5.0V，电流负载能力≤100mA.电压及电流输出在充许负载范围内误差小于5％FS。电压及电流输出须共用一个输出正端, 输出负端为地。输出电压及电流设定精确到二位十进制数。 (Through Singlechip button to choose the type and requirements of the output signal output, in the LED display on the instructions of the signal type and set the value. System power supply ± 15V, ± 5V. Constant current output 0.0 ~ 8.0mA, the load resistance ≤ 500Ω. 3. Regulator output voltage 0.0 ~ 5.0V, current load capacity ≤ 100mA. Voltage and current output in the framework allow the load error is less than 5 FS. Output voltage and current output is required to share a client, the output of negative side for the land. Output voltage and current settings accurate to two decimal number.)

a calculator in c++ that you can calculate mass problems so easy with

一个VB程序，功能为生成点阵字库，支持任意种字体，稍作修改就可以改变字体大小，默认生成点阵大小为16x16(A VB program, function to generate dot matrix font support any fonts, minor modifications can change the font size, the default generated lattice size 16x16)

Visual C# 2010 Windows AutoLogin

微软应用程序编写指南，比较不错的一本C、c++编写指导教程(Microsoft Application Programming Guide, a relatively good one C, c++ tutorial written guidance)

大地坐标，经纬度坐标转换 坐标投影系统(geodetic coordinates, longitude and latitude coordinates conversion coordinates projection system)

这个程序讲的是windows程序内部运行原理(This procedure is a windows program stresses the principles of the internal operation)

Virtual虚函数用法(Virtual virtual function usage)