opc协议规范

资源描述NRF24L01无线模块的使用手册，包含原理图、51单片机源代码、pcb封装等

1)生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。 2) 在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布情况3) 将上述滤波器改为中心频率为100KHz的带通滤波器，信号源为带外的90KHz和带内的100KHz的混合正弦信号，。 4) 用M文件实现上述低通滤波器。 -1) 2KHz and 8KHz to generate the mixed-signal, so that the signal through the above-mentioned filter, filter before and after observation of the waveform and spectrum distribution of the changes. 2) add to the signal in white Gaussian noise was observed before and after filtering and spectral waveform changes in the distribution of 3) will be replaced by the above-mentioned filter center frequency of 100KHz band pass filter, the signal source for the band and the band of 90KHz 100KHz Sine of the mixed signals. 4) achieve the above-mentioned documents with M low-pass filter.

与传统形式的标签相比，电子标签容量更大(1bit—1024bit)，数据可随时更新，可读写。   读写速度：与条码相比 ，无须直线对准扫描，读写速度更快，可多目标识别、运动识别。   使用方便：体积小，容易封装，可以嵌入产 品内。   安全：专用芯片、序列号惟一、很难复制。   耐用：无机械故障、寿命长、抗恶劣环境。

介绍串口通讯的几个例子。从中选取自己需要的。-Introduce a few examples of serial communication. Selected their needs.

多径锐利平坦衰落仿真,包括PDF,CDF,PSD的分析,且带有一个BPSK通信的实例-Sharp flat fading multipath simulation, including the PDF, CDF, PSD analysis, and with a BPSK communication examples

手机维修通讯软件-mobile communications software maintenance

a simple serial port interface

一篇介绍键盘接口的英文文档，讲得很详细，做ps/2设计的可以参考-a keyboard interface on the English documents, made it very detailed, so ps/2 reference design

基于mapx实现地理地图信息系统中的鹰眼图功能，仿vb源码，采用vc实现，新手上路，请多指教-based on Geographic Information System maps of the Hawkeye map function, fake vb source, using vc realized, Getting Started, please enlighten.

基于WAP的手机无线应用的源代码，测试可用，供大家下载研究-WAP-based mobile wireless applications, source code, testing is available for download U.S. study