串口测试程序

用vb写的移动测距，效率很高的，希望大家喜欢-Using vb to write mobile location, efficient, and I hope you like

TOP PORT (USB) 调试接口说明 本接口是利用PL-2303HX的USB转RS232的接口芯片设计实现了一个TTL(5V)的RS232串口，并且利用了PL-2303HX的2个GPIO口软件模拟了一个低速的I2C总线.该接口由USB接口提供5V电压，可自带2Kbit(24C02)数据备份EEPROM (单独读写通道,不占用I2C总线地址)。并可对外提供小于250mA的5V电压。尤其适合WIN-XP以后的没有并口和串口笔记本电脑。整机成本不到￥20RMB。 -TOP PORT (USB) interface debugging of this interface is the use of PL-2303HX the USB to RS232 interface chip design to achieve a TTL (5V) of the RS232 serial port, and use of PL-2303HX the two GPIO port software simulation of a low-speed I2C bus. The interface from the USB interface to provide 5V voltage, can bring their own 2Kbit (24C02) data backup EEPROM (separate read and write access, do not occupy I2C bus address). And may provide less than 250mA of 5V voltage. WIN-XP is particularly suitable for subsequent parallel and serial no notebooks. Machine costs less than ￥ 20RMB.

MODBUS通信程序.可用于学习施耐得PLC通信、现在国产好多RTU都用MODBUS协议。-MODBUS communications procedures. Learning can be used Shi able to endure PLC communications, many Chinese now are using MODBUS RTU agreement.

自动升级程序, 自动升级程序-Automatic escalation procedures, automatic escalation procedures

外文现刊目录，提供了多种外文期刊名，供广大爱好者投稿时参考-Foreign directory is published, providing a wide variety of foreign periodicals, and writing for the majority of enthusiasts reference

本代码是有一位网络达人自己编写，对于直接序列扩频有很好的理解，希望对大家有帮助。

利用osip协议栈开发的测试程序，简单实现了UAS的呼叫功能-Use oSIP protocol stack developed test procedure, a simple call to achieve a functional UAS

关于基于IP通信的主流协议SIP的文档，适合SIP协议开发人员阅读。-about SIP(session initiation protocol).

This function generates normalized rayleigh samples based on Inverse DFT

sms短信发送方面的东东。仅供参考使用。有问题可以和我联系-sms text messages sent to the Eastern context. For reference use. Problems can contact me and