a smaple of a game called electronic pet.

说明：  对正立方体图形进行平移、旋转、变比、对城、错切等几何变换及平行投影和透视图等投影变换。(Graphics on the cube is translation, rotation, variable ratio, on the City, shear, such as geometric transformations and parallel projection and perspective projection transformation and so on.)

C++ STL关于map的代码，里面详细说明了map的使用(n c++ STL code on the map, the map is described in detail)

该代码是stm芯片的USB外设实现所需要的代码，通过该代码可以更好地理解和学习USB设备在stm上的配置，同时也能帮助到正在学习 嵌入式的朋友使用USB

编译原理实验，实现简单的正则表达式到nfa到dfa的过程。(compiler principle experiment, the realization of a simple regular expression to nfa to dfa process.)

将屏幕不断保存为avi文件的程序,可以用于制作程序演示(screen constantly kept as avi document procedures can be used for the production process demonstration)

显示在主页上的文字及图片，仅仅供测试用，实现某个小功能。(Display text and images on the home page, just for testing, to achieve a small function.)

1.通过文本方式直接导入，筛选完成后直接导出2.自定义指定筛选邮箱格式，如@163.com3..net framework 4.0框架4.vs2017

一个24点游戏的论文，可以作为格式来用，也可以用来自己做游戏(The papers of a 24-point game, as the format to use, can also be used to make their own game)

单片机实现温度的测量和液晶显示 ds18b20 LCD1602(MCU temperature measurements and liquid crystal display ds18b20 LCD1602)

说明：  串口发射1khz信号或者并口发射1khz信号，(Transmitting 1 kHz signal)