Communication between PC and LPC2000 SPI

很详细的介绍sip的文章，可以作为通信变成的参考，值得学习。-Sip a very detailed introduction of the article, can be used as communication becomes a reference, it is worth learning.

功能描述：该程序用于显示心电采集电路采集到的心电信号，通讯采用串口通讯，实时在图表上显示接收到的信号，同时具有数据库功能，可以保存每次接收到的数据，用于回放数据。 开发环境：C++ Builder 6.0 所用控件：AbsoluteDatabase-Functional Description: The program used to display ECG acquisition circuit to the ECG acquisition, communications using serial communication, real-time chart shows the received signal, but also has a database function, can be preserved for each received data, using in the playback data. Development Environment: C++ Builder 6.0 used in the control: AbsoluteDatabase

应用背景 FIR(fini te impulse response)滤波器是数字信号处理系统中最基本的元件，它可以在保证任意幅频特性的同时具有严格的线性相频特性，同时其单位冲激响应是有限的，没有输入到输出的反馈，系统稳定。因此，FIR滤波器在通信、图像处理、模式识别等领域都有着广泛的应用。关键技术在进入FIR滤波器前，首先要将信号通过A／D器件进行模数转换，使之成为8bit的数字信号，一般可用速度较高的逐次逼进式A／D转换器，不论采用乘累加方法还是分布式算法设计FIR滤波器，滤波器输出的数据都是一串序列，要使它能直观地反应出来，还需经过数模转换，因此由FPGA构成的FIR滤波器的输出须外接D／A模块。

根据输入的调制方式对输入序列进行调制，完成对星座图的映射-According to the modulation input sequence of input modulation, the completion of the mapping of the constellation diagram

nrf开发系统使用指南，设计类蓝牙方案时这种模式值得认真研究，它可以帮组你理解此类系统的工作原理-nrf development system using the guidelines, design programs like Bluetooth model worthy of serious study. It can help you understand this type of group work principle of the system

改程序是708温度控制器与上位机通讯显示系统。-Reform process is 708 temperature controller with the host computer display system of communication.

Intercom 是一个 Unix系统上灵活的语音传输软件。支持标准音频压缩比如GSM, G.711, and G.72x和其他音频编码。Intercom专为高速网络设计来传输高品质的语音，也支持窄带传输。-Intercom is a Unix system flexible voice transmission software. Support audio compression standards such as GSM, G.711, and G.72x and other audio coding. Intercom specifically designed for high-speed network to deliver high-quality voice, also support narrowband transmission.

用频率抽样法设计FIR滤波器。-frequency sampling method used FIR filter design.

如何使用KEIL进行软硬件仿真 如何使用KEIL进行软硬件仿真-How to use the KEIL to software and hardware simulation

Modbus 源码程序 非常详尽 适合初学者-Modbus-source program suitable for beginners, very detailed