Test_ifnonnull

说明：  基于16位ADC，AD7705的称重系统设计，以单片机89s52为数据处理和控制模块，1602为显示模块(Precision Weigh Scale Design Using the AD7192, 24-Bit Sigma-Delta ADC with Internal PGA, as AD converter and MCU 89s52 as data processer and controller)

说明：  ESP8266 官方无OS 版本 SDK(ESP8266 guangfang SDK)

实验室常用c51单片机小程序，趣味实验程序单片机开发，单片机技术应用，asm源文件,keil程序(C51 microcontroller program commonly used in laboratory, interesting experimental program development of microcontroller, application of microcontroller technology)

说明：  自我学习STM32教程，学习进步，兴趣是最好的老师，只要愿意学就能成功(Self-learning STM32, learning progress, interest is the best teacher, as long as willing to learn can succeed.)

分别控制四路电机转动，转速以正弦规律变化。与计算机进行串口通信，可用串口控制转速，位置控制。(The rotational speed of the four motor is controlled by the sine law. Serial communication with the computer, using serial port to control the speed, position control.)

Android版多屏互动是公司根据市场需求推出的一项新功能。该软件实现模拟PC和电视的遥控器、鼠标和键盘操作，并可以将PC的屏幕和视频发送至TV和手机，实现真正意义上的多屏互动 (Android version of the multi-screen interaction is a new feature introduced in the company based on market demand. The software simulation of the PC and the TV remote control, mouse and keyboard, and you can send your PC to the TV screen and video and mobile, multi-screen interactive real sense of)

说明：  c8051f020从18b20读取温度数据，并进行AD转换的程序(c8051f020 read temperature data from the 18b20, and the procedure for AD conversion)

实用的IGBT的RCD吸收电路，采用真实器件参数，做到基本无尖峰且吸收能量最小，保持开关管最小应力！！(Practical IGBT of RCD snubber circuit, using the real device parameters, so that almost no energy absorption peak and minimum, keep the switch minimum stress! !)

a good content to see the data of solar panel .also u can find out.the hardwere

说明：  智能小车的控制代码程序，做课设的时候用过(Control Code Program of Intelligent Car)