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四位共阴数码管显示实验（段选＋位选）代码 适用于STM32F103单片机(Four common negative digital display experiment (segment selection + bit selection) Suitable for STM32F103 MCU)

PID直接转矩控制技术仿真绝对能过PID直接转矩控制技术仿真绝对能过PID直接转矩控制技术仿真绝对能过(PID direct torque control technology simulation can lead)

说明：  利用压电超声导波时间反转法的管道结构裂纹监测研究(Study on the Crack Monitoring of Pipeline Structures Using Piezoelectric Ultrasonic Guided Wave Time Reversal Method)

STM32F407示波器的设计，程序仅供参考(STM32F407 oscilloscope)

利用51单片机（AT89S52）的P1口对8位数码管的段位进行控制，用P2口对8位数码管的位数进行控制。(P1 port 51 microcontroller (AT89S52) control with 8 digital tube Dan P2 port to control the number of bits of the 8-bit digital tube)

ieee9节点配电网采用前推回带法计算电压，电流(Ieee9 node distribution network USES the former back zone method to calculate the voltage, electric current)

说明：  TC275单片机基于autosar的bootloader工程代码(Bootloader engineering code of tc275 SCM based on AUTOSAR)

32位单片机HR8P506上运行FreeRTOS，HR8P506是一款Cortex-m0内核的国产单片机，支持2.5-5.5V的宽电压，36KB Flash和8KB SRAM能够满足绝大多数的应用开发。(32-bit MCU HR8P506 runs FreeRTOS. HR8P506 is a domestic MCU with cortex-m0 kernel, which supports a wide voltage of 2.5-5.5v, 36KB Flash and 8KB SRAM which can meet most application development.)

ds1994一线通讯协议 ds1994一线通讯协议(ds1994 front-line communications protocol the ds1994 first-line communications protocol)

使用数码管和AT24C02实现： 1、数码管从0显示到99，溢出后从0循环显示，时间间隔为一秒。 2、显示到某个数时突然关闭电源，AT24C02将保存当前的数字。 3、重新启动后数码管会接着上次的数继续显示(Using digital tube and AT24C02 implementation: 1, the digital tube displays from 0 to 99. After overflow, it displays from 0 cycles, with a time interval of one second. 2, display a number of time to turn off the power suddenly, AT24C02 will save the current number. 3, after reboot, the number will continue to display.)