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说明：  通过IO口控制两路24V电压输出，一路24V转两路24V(Two 24V voltage outputs are controlled by IO port, one 24V is converted to two 24V.)

说明：  MT7620N SCH&PCB,you can reference it to design yourselef.

说明：  Basic principle of LDPC code and FPGA implementation of LDPC code

说明：  ATSHA204A加密芯片详细使用方法！ 保护您的程序不被抄袭。(ATSHA204A encryption chip detailed use method! Protect your program from plagiarism.)

4G模块EC20开发资料，硬件设计手册，AT指令，原理图和PCB图封装，完整开发资料。(Development Data of 4G Module EC20 and Hardware Design Manual)

说明：  文件中包含stm32开发板所配套的开关使用说明的程序例程，重在讲解开关是如何被使用的，在kEIL5软件上怎么编写的。(The document contains the program routine of the switch instructions matched by STM32 development board, focusing on how the switch is used and how to write on kEIL5 software.)

LCL逆变器电容电流反馈和逆变器侧电流反馈有源阻尼(LCL inverter capacitor current feedback and inverter side current feedback active damping)

电路的连接图，程序都有注释，仿真平台protues，适合初学的人(The connection diagram of the circuit, the program has the annotation, the simulation platform Protues, suitable for the first student)

常用的有源晶振封装库和原理图库，AD环境。(AD environment commonly used active crystal package library and schematic library)

说明：  4G模块EC20开发资料，硬件设计手册，AT指令，原理图和PCB图封装，完整开发资料。(Development Data of 4G Module EC20 and Hardware Design Manual)