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合成孔径雷达；非线性调频信号的窗函数产生法，采用不同的窗函数(Synthetic aperture radar; non-linear FM signal window function generation method, using a different window function)

通过给定线路参数（含限速）计算获得S-V、S-P、S-T列车牵引曲线(Calculation of train traction curve through given line parameters)

说明：  基于AT89C51单片机设计制作一个抢答器，具体要求如下： 1、 设计一个智力竞赛抢答器，可同时共8名选手参加比赛，编号为1、2、3、4、5、6、7、8，各用一个按键。 2、 用一个按键作为主持人总开关，用来控制系统的清零和抢答的开始。 3、 抢答器开始后，数码管开始10秒倒计时，若有选手按动抢答按钮，在LED数码管上显示选手的编号，同时灯亮且伴随声音提示；倒计时完成后，选手不能在抢答；有人抢答成功后，要禁止其他选手抢答；最先抢答选手的编号一直保留到主持人将系统清零。(Based on AT89C51 single chip computer, a rush answerer is designed and manufactured. The specific requirements are as follows: 1. Designing an intelligence contest answering machine, which can be attended by 8 competitors at the same time, numbered 1, 2, 3, 4, 5, 6, 7 and 8, each with a button. 2. A key is used as the master switch of the host, which is used to clear the zero of the control system and start the rush response. 3. After the answering machine starts, the digital tube counts down 10 seconds. If a player presses the answering button and displays the player's number on the LED digital tube, the light is on and accompanied by sound prompts. After the countdown is completed, the competitor can't rush to answer. When someone rushes to answer successfully, other competitors are forbidden to rush to answer. The number of the first competitor is kept until the host clears the system.)

MATLAB代码合集，主要列举经常使用的算法代码和案例(MATLAB code collection, mainly cited frequently used algorithms, code and cases)

一款基于纯CSS3的3D木头人行走动画，关于人物行走动画(A CSS3 based 3D Wood Walking animation, about character walking animation.)

VC++生成窗口工具栏渐变色效果，类似于Windows 开始菜单弹出来的渐变效果，本代码中的渐变色你还可以试着改变一下，在其它地方生成这种渐变色窗口，其原理十分相似，你可参考下。

ADI心电应用笔记硬件，内含.c程序、原理图、软硬件调试文件(ADI ECG application notes hardware, including.C procedures, schematics, software and hardware debugging documents)

说明：  程序已编写成函数形式，以使用实验台数据验证，没问题。(To verify, no problem.)

LED 圣诞树，圣诞节的礼物~多种颜色的LED灯装扮成闪闪发光的圣诞树(LED Christmas trees, Christmas gift- the colors of the LED lights to dress up as a shining Christmas tree)

vision 3d tracking learning example