鑫诺话机与外置读卡器的通讯协议V1.0 鑫诺话机
Sino phone with an external reader communication protocol V1.0 (2011-01-03, TEXT, 13KB, 下载7次)
如果在传输的光路中存在较大的PMD会扭曲脉冲的波形，严重的会使脉冲中心偏移，以前光纤传输速率低，对PMD要求不高，现在正在发展高传输速率(10Gb/s或40Gb/s)通讯网路，就一定要求对PMD进行测量分析，目的使减小PMD,但不能消除
If the transmission of optical PMD exists in the larger will distort the pulse waveform, pulse center will offset serious, previous fiber optic transmission rates and low PMD ask for much, now is the development of high transmission speed (10Gb/s or 40Gb/s) communications network, will certainly require PMD measurement analysis, the goal to reduce the PMD, but can not eliminate (2010-04-29, TEXT, 4KB, 下载1次)
DP_51PRO实验仪图形液晶显示实验。先在屏幕上的随机位置显示随机数字(0--9)，
* 然后调用画直线函数以屏幕中心为中点画对称的直线，最后显示一个简单的窗口。
Experiment DP_51PRO graphics liquid crystal display experiment. First in a random location on the screen shows random number (0 9),* then calls the function to draw a straight line in the screen center line stipple symmetry, and finally shows a simple window. (2007-07-28, TEXT, 165KB, 下载25次)