232---485

说明：  使用TM1638驱动共阳数码管显示，Keil4工程(Using tm1638 to drive the display of common positive nixie tube)

用PIC12F508实现对红外遥控器的解码，控制另一个单片机的IO口，实现按键功能(With PIC12F508 achieve decoding infrared remote control, the control of another microcontroller IO port to achieve key functions)

步进电机驱动，微处理器为S3C2410，具有调节转速功能(Stepper motor drive, microprocessor S3C2410, adjust the speed function with)

单片机音频通信9170和9200，接收发送源程序(9170 and 9200 microcontroller audio communication, the receiver sends source)

说明：  this paper is about multilevel inverter structure

说明：  华为电路仿真培训教程，基于Hyperlyn平台仿真信号完整性电源完整性等高速PCB仿真设计平台(Huawei Circuit Simulation Training Course)

说明：  Control module for a Sony projector

基于STM32F103C8T6单片机的环境检测系统，应用DHT11温湿度传感器，MQ135烟雾传感器，检测环境温湿度，烟雾，可燃气，检测到烟雾蜂鸣器报警，将实时数据显示在OLED屏上，且有按键可以修改报警值。(Based on STM32F103C8T6 microcontroller environment detection system, DHT11 temperature and humidity sensor and MQ135 smoke sensor are used to detect ambient temperature and humidity, smoke and flammable gas, detect smoke buzzer alarm, display real-time data on OLED screen, and key can modify the alarm value.)

说明：  程序为STM32 串口UART 使用DMA方式收发数据的实践(how to read data on UART by using DMA when number of bytes to receive is not known in advance.)

说明：  基于51单片机的计算器，5*4矩阵键盘，包含仿真工程文件和程序工程文件，还有word资料(Calculator based on 51 single chip microcomputer, 5 * 4 matrix keyboard, including simulation engineering files and program engineering files, as well as word data)