污水处理控制，C++开发，内含串口通信，数据记录并打印多个C++程序，能加大爱好者对PC与单片机、PLC通信的学习。-Sewage treatment control, C++ development, includes serial communications, data recording and print multiple C++ program, can increase the PC and microcontroller enthusiasts, PLC communicatio

RD-DH32 ESC/POS C#实现，可以打印条码，二维码，图片，注释详尽，其中二维码打印需要一个类库，请自己下载-implement for RD-DH32 ESC/POS instruction using C# . use this implement we can print barcode ,2d code ,image .

Arduino串口通讯，发送1开始采集，对A0-A4口轮询采集，并打印出来，每一路数据分别以a,b,c,d,e标识,适合新手-Arduino serial communication, send 1 to start collection, the A0-A4 port polling collection, and print out, each way the data were a, b, c, d, e logo