SAE J1850 OBD2汽车通信协议

第 3 部分卫星通信的基本原理在卫星通信中采用的调制技术1.早期的通信2.同时传输多个信号3.调制类型4.数字调制的量化数据5.数字调制技术 — — CW （常数振幅）6.正交幅度调制 （QAM）7.恢复数据包错误8.振幅和相移键控 （APSK）9.数字调制-决定区域

EXCEL的安装、配置、编程接口等全工程的帮助文档，EXCEL是美国的交换机，但在中国的电信业用的很多，而且EXCEL不免费提供文档，不信你到别处-EXCEL installation, configuration, programming interface, such as the entire project to help document, EXCEL switch the United States, but in China s telecom industry with many, but not provided free of charge EXCEL documents, do not believe you go to somewhere else

pc到PLC的串口通讯程序源码 有详细的注释-pc to the PLC serial communication program source has detailed notes

VB编写的串口通讯界面，主要面向51单片机的串口通信。-VB prepared the serial communication interface, the main MCU 51 for serial communication.

开发OPC server的一个例范。OPC主要适用于过程控制和制造自动化等应用领域，你可以从该例子中学习如何编写一个服务器程序。-development of the OPC server Fan 1 cases. OPC is primarily applicable to process control and manufacturing automation applications, you can from the examples to learn how to prepare a server.

中国1号信令的接入源代码--Source code of Chinese Common Channel Signaling System No.1

1.目录TCP.IP终端程序源代码是一个实现一个TCP.UDP终端的程序，通过该终端可以实现POP3、SMTP、FTP等各种功能； 2.目录超级链接是一个能够在窗体上实现超级链接的程序，或者发送email； 3.目录端口扫描是一个能够对指定IP地址的单个端口或者多个端口进行扫描的程序； 4.目录获得本机ip地址的MFC程序是一个通过MFC来获取本地计算机IP地址的程序。 5.目录获取网络设置，网卡信息是一个获取网络DNS、子网掩码、网卡地址的综合程序，6.EnumProtocal目录是获取系统支持的网络协议信息的程序。-1. Contents TCP.IP terminal program source code is a realization of a TCP.UDP terminal procedures, the terminal can be achieved POP3, SMTP, FTP and other functions; 2. Directory is a hyperlink to achieve in the form of hyperlinks procedures, or send email; 3. directory is a port scan to be able to specify the IP addresses of individual ports or multiple port scanning procedures; 4. access to the directory for ip address MFC process is an MFC to obtain through local computer IP address procedures. 5. Directory access network configuration, network card, access to information is a DNS network, subnet mask, Ethernet addresses the comprehensive procedures 6.EnumProtocal directory access system to support the network protocol inform

一款国产仿照飞利浦mfrc500的射频卡芯片1702中文操作手册-Philips made a replica of the RF card chips mfrc500 Chinese Operation Manual 1702

这是我以前做编码方式的时候的一些有用的程序，传上来供大家共享-This is the way I used to do when coding a number of useful procedures, Chuan-up for all to share

可以知道人家的邮箱的密码的好软件,找了好久才有的,绝对是能用的-Can know other people s mail password good software, only to find for a long time, it is usable