基于单片机实现的NRF24l01无线通信工程

本源码是一个bbs客户端程序，能够根据bbs的协议原则，对每个字节进行分析，同时也能够同时显示中文和英文！-the source is a bulletin board clients, according to the agreement in principle with each other, for each byte analysis, but also can display Chinese and English!

SIP and IPLink in the Next-Generation Network.pdf 下一代网络中的SIP和IPLink-SIP and IPLink in the Next-Generation Network.pdf next-generation network SIP and IPLink

FPGA/CPLD应用,uart通讯VHDL原码.-FPGA/CPLD applications, UART communications VHDL source.

使用borland公司的delphi语言,编程实现CTI交换机坐席之间的互拨的功能。delphi语言完成语音板卡的设置, 应用程序接口API,七号信令的配置-use borland company delphi language, Programming CTI switches between the mutual Seat allocation functions. Delphi language Voice Card completed the installation, application programming interface API, SS7 configuration

各种滤波器的设计方法，包括直接型、移位型、分布式滤波器设计。各类滤波器设计概括总结-A variety of filter design methods, including direct type, shift type, distributed filter design. Summed up all kinds of filter design

展示了如何使用QSerialPort通过USB端口发送和接收数据，该程序用Qt C ++做的。实现异步数据接收和错误处理事件。

QAM调制的基本原理 QAM调制实际上是幅度调制和相位调制的组合。相位 + 幅度状态定义了一个数字或数 字的组合。QAM的优点是具有更大的符号率，从而可获得更高的系统效率。通常由符号率 确定占用带宽。因此每个符号的比特（基本信息单位）越多，效率就越高。-QAM modulation of the basic principles are in fact QAM modulation amplitude modulation and phase modulation of the portfolio. Phase+ margin status defines a combination of numbers or figures. The advantage of QAM symbols are greater rate, thus the system efficiency will be higher. Symbol rate is usually determined by the occupied bandwidth. Thus each bit symbols (basic units of information) the more the higher the efficiency.

里面含有一个文件和文件夹，其中直接序列扩频文件可以直接使用，仿真直接序列扩频的生成过程。文件夹里含有两个函数，一个模拟信道的函数，另外一个是方针BPSK环境的函数

modbus协议，中文文档，讲解十分详细，方便参看查询-modbus protocol, English documents, explaining in great detail, see the convenience inquiries

蓝牙HID键盘源代码，采用CSRBLUELAB27架构有很好的参考价值和开发价值。-Bluetooth HID keyboard source code, adopted CSRBLUELAB27 structure is a good reference value and development value.