biliweifenkongzhi

说明：  A lecture about scattering mechanisms

说明：  淘宝技术这十年，完整最终确认版。讲述淘宝技术演进与发展(Taobao technology in this decade, complete final confirmation versio)

说明：  有关系统时域频域的参数辨识，具体操作见相关参考书(Parameter identification in time domain and frequency domain)

用python写爬虫,抓取央文新闻点评部分，多线程，超时处理(Write a crawler with Python, part of Wang grab news comment threads, timeout processing)

说明：  可以捕捉微信窗口，并且可以实现定时的消息发送(It can capture wechat window and send messages regularly)

由于普通LED点阵显示屏动态显示通常采用硬件扫描驱动，这在一些需要特殊显示的场合显得不够灵活。文中提出了一种利用PC机和单片机的通讯来实现显示屏灵活的动态显示和远程监控的设计方法，同时该方法还可以将显示内容在PC机上进行预览。-Because of the general dynamic display LED dot matrix display scan driver commonly used hardware, which in some occasions require special display appears not flexible enough. This paper presents a PC-use and single-chip communication to achieve a flexible dynamic screen display and remote monitoring and control design methods, while the method can also display the contents in the PC-on preview.

点取CAD中点，可以获得此点的坐标值，单位为-Point to take the midpoint of CAD can obtain the coordinates of this point, the unit of mm

高等教育出版社 电路 第四版 低9 10 11 章-ppt for dianlu 9 10 11

说明：  3种电动自行车控制板 电动车控制板 电动控制板(Three kinds of electric bicycle control board)

说明：  matlab绘制信号的拉普拉斯变换，程序5个(matlab plot signal Laplace transform, one of the procedures)