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使用C编写递归程序-prepared using recursive procedure C

说明：  在实例中实现差分方程和数值积分差分方程 ~ 离散时段上描述变化过程的数学模型(The difference equation and numerical integral difference equation are realized to describe the mathematical model of the change process in the discrete time period)

基于LabVIEW软件设计数字电子秤系统，阐述系统硬件电路构成、软件设计思想和具体实现。系统应用虚拟仪器技术进行自动测量、处理和显示，实现电子秤的智能化，并且要求具有测量精度高、界面友好、运行稳定可靠、功能便于扩展。(LabVIEW-based software design digital electronic weighing system, the system hardware circuits, software design idea and concrete implementation. System Virtual Instrument Technology to carry out automatic measurement, processing and show that implementation of intelligent electronic scales, and requires a measurement of high precision, user-friendly, stable and reliable operation, function convenient for extension.)

清华大学出版社版的多媒体技术及应用的PPT，制作的还不错。-Tsinghua University Press edition of Multimedia Technology and Application of PPT, produced good.

一个简单的贪吃蛇，希望多初学者有点帮助，就用了for循环写的(A simple snake, hope to beginners a little help, the program only used for the cycle to write)

说明：  stm32f407的舵机控制，角度范围为0-180度，可通过按键来改变pwm占空比，进而对舵机转动角度进行控制。也可以自行设置转动角度(Stm32f407 steering gear control, the angle range is 0-180 degrees, through the key to change the PWM duty cycle, and then control the steering gear rotation angle. The rotation angle can also be set by yourself)

　介绍了暖通空调系统(HVAC) 故障检测与诊断(FDD) 的概念,发生故障的原因以及主要的故障检测与诊断方 法,比较了常用的故障检测与诊断方法的优缺点,分析了国内、外暖通空调故障检测与诊断的研究现状和应用情况,对暖 通空调故障检测与诊断的发展过程与方向进行了总结和展望-Introduction of the HVAC system (HVAC) fault detection and diagnosis (FDD) concept, the reasons for failure as well as major fault detection and diagnosis methods, compared the commonly used method of fault detection and diagnosis of the strengths and weaknesses, analyzes the domestic and foreign HVAC Fault Detection and Diagnosis Research and application of HVAC Fault Detection and Diagnosis with the direction of the development process are summarized and prospects

电力系统连续潮流程序，可以计算电力系统最大输电能力-Continuous trend of power system procedures, can calculate the maximum transmission capacity of power system

吃数游戏是一个在turboC2环境下编写的小游戏，该游戏要求在宫殿中找出几个数之和是7的数吃掉，并走到7的位置-eat a few games in turboC2 environment prepared by the small games, the games in the palace to identify several hours, and the number is seven eaten, and walked seven locations. .

Fortran welding video sample