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...

VB.net版串口控制串口控制activeport安装档和钥匙枪

基于socket的http类，可以用于文件的上传下载，http请求操作。支持定义请求头、超时设置等。

LIN总线是方兴未艾的MCU间通信工具.在系统中引入LIN总线,可以达到成本,性能和可靠性的一致要求.-LIN bus is ascendant among the MCU communications tool. The introduction of the system LIN bus, to achieve cost, performance and reliability at the unanimous request.

SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti

Source Code in C language for microcontrollers of 51 family to implement serial communications based on RS-485 protocol.

smpp ver. 50 documentation

询问推荐人

采用stun方式和sock5穿越防火墙，来保证能在防火墙条件下通过

应用背景 要制造一台专用的测量仪器，可通过USB和串口进行控制。 实时控制，通信控制，可用于WinCE和Windows。 关键技术将一个简单接收机，包装为ATE（自动测试仪器）。特别是频率扫描，有多种方式。

本课题是一个tcl代码，旨在利用ns2模拟器模拟无线传感器网络中的AODV协议。研究AODV协议的性能。例如吞吐量和数据包投递率。。。等等；