DoubledImplement2

OLED0.91显示的USB电压电流表程序，方便测试USB的电压电流情况(OLED 0.91 shows the USB voltage meter program to facilitate the test voltage and current situation of USB)

C51单片机8位LED左移显示变化数字实验例程(C51 single-chip 8-bit LED digital test routines left show changes)

一个读取西门子PLC数据的从代码，希望大家喜欢，谢谢大家(A read Siemens PLC data from the code, I hope you like, thank you.)

GD32F103系列芯片，用按键控制LED指示灯。(GD32F103 series chip, with keypad control LED.)

AVR128的一些例程，对了解AVR128mcu和程序编写有帮助。(Some routines of AVR128.It helps to understand AVR128mcu and programming.)

基于FM芯片RDA5807的51单片机的FM收音机，通过IIC协议控制芯片实现调台、调音量功能。(Based on FM 51 MCU chip RDA5807 FM radio, through the IIC protocol control chip to realize the radio, the tuning function.)

说明：  一本较好的VB教程，主讲上位机编程，相信大家会喜欢的。(A better VB tutorials, keynote host computer programming, I believe you will like.)

边界盒的检测，能有效的知道边界盒的最大长度，为编程带来方便(Bounding box test, which can effectively know the maximum length of the boundary box for programming convenience)

ip28-berr.c: Bus error handling.

MSP430 单片机实现远程升级,解决jatag程序更新问题。(MSP430 serial remote upgrade program,Solve the problem of jatag program update.)