移动电话频率选择开关，对于手机信号接收与发射有很重要的作用...

使用USR和RockWell Modem的语音Modem程序 -Modem program Using 3Com USR Modem and RockWell Modem

AT命令集，GPRS模块开发必备，包含2个pdf，一中文，一英文，可互相对照阅读-AT command set, GPRS module development necessary, including the two pdf, one Chinese, one English, can be read against each other

Skype API delphi 控件源码，实现skype大部分功能，有一些bug。-Skype API source code control and achieve skype most functional, some bug.

音频工作站提出２４位音频处理卡实现方案，可以完成高保真立体声音频信号的录取、-Audio Workstation made 24 audio processing card program complete high-fidelity stereo audio signals of admission,

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周立功公司的关于C51很权威的书,很适合刚入门的初学者用,讲的很详细.分析的很到位-ZLG" s authoritative book on the C51, it is suitable for beginners just getting started with, talking in great detail. Analysis is in place

这是一个4206－DATAMAX 打印驱动程序 专门打印条形码。-This is a 4206- DATAMAX Print Driver for specialized printing bar codes.

中兴的有关各种协议的内部介绍资料!非常全面!-ZTE agreement on various internal introduce information! Very comprehensive!

需要为 modbus 协议 connection.good 代码和示例的源代码。需要 modbus 协议 connection.good 代码和示例的源代码。需要 modbus 协议 connection.good 代码和示例的源代码。需要 modbus 协议 connection.good 代码和示例的源代码。需要为 modbus 协议 connection.good 代码和示例源代码

一个用VB编写的电话应答软件，可以进行录间和播放。使用TAPI 技术实现的，对串口编程有一定的指导作用-Using VB to prepare a telephone answering software, can be recorded and broadcast between. The use of TAPI technology and programming of serial port a certain guiding function