低通切比雪夫I型数字滤波器阶数为7阶 在2000Hz通带表现截止在2500Hz阻带边界在过渡带和阻带之间是单调下降波形....

串口编程调试精灵（VC++串口通信实例导航）源码-Serial Programming Debugging the wizard (VC++ Serial Communication instance navigation) source

PHS通信测试程序-PHS communications test procedures

这是一个控制程序，用于学校英语听力室中老师与学生之间的交互教学。-This is a control procedure for the hearing room school English teachers and students between the interactive teaching.

这是一个通讯软件-This is a communications software

本程序包括一组子程序和中断程序，通过S7-200自由端口功能来产生从Modbus RTU. 它支持下列Modbus功能：----1.读输出(线圈)----2.读输入(触点)----3.读保持寄存器(V 存储器).----4.读输入寄存器----5.写单路输出----6.写单路保持寄存器----15.写多路输出----16.写多路保持寄存器-this includes a subroutine and the interruption procedure for the adoption of the S7-200 free port functions to generate from the Modbus RTU. It supports the following functions : a Modbus. Reading output (2) coil. Reading input (contact)---- 3. Reading maintain registers (V memory ).---- 4. Reading input register---- 5. write single-output---- 6. write to maintain the single-route Register---- 15. write multiple output---- 16. write multiple maintain registers

通讯编程过程中,有时需要得到MAC地址,本文说明,取得系统中网卡MAC地址的三种方法,有源代码说明.-communications programming process, and sometimes require MAC address, the paper stated that made system MAC addresses of the three methods, the active code note.

数据同步，用于PIM 的数据同步，包括手持设设备和PC机，移动设备同服务器之间的数据同步-data synchronization, used for PIM, support data synchronization a movable device (eg.handset and PC) between server.

turbo码的编译码实现，很全，还是没有画图语句，自己补充-turbo code codec implementation, it is full, or not drawing statement, added their own

串口编程,主要用于测试串口发送命令控制 开发工具为VC6.0-Serial programming, mainly for testing serial port to send commands to control development tools for VC6.0

通讯测试源程序员通讯测试源程序 通讯测试源程序-Communications test source programmers communications test source communications test source communications test source