Cronometro

这是一个开发完成并投入使用的VB通过OPC连接西门子200PLC的程序，OPC中介是KepWare。(This is a program for VB contact with Siemens PLC use OPC.)

大地坐标系正算，由空间大地直角坐标系转到WGS84坐标系(terristial coordinates transform)

search substr search substrsearch substrsearch substr(search substrsearch substrsearch substrsearch substr)

ADO链接Access2010的程序 MFC 自己编写的实现以CRecordSet 实现增删改查操作数据库功能 注意 包中有database1文件路径不对，放到C:\database1.accdb即可运行 否则异常(MFC ADO link Access2010 I have written a program to achieve a CRecordSet achieve CRUD database operations function Note package has database1 file path is wrong, put C: database1.accdb to run otherwise abnormal)

读取CORS数据，重采样成30秒，计算电离层总电子含量(Read CORS data, resampling into 30 seconds, calculate the total electron content of the ionosphere)

说明：  在VB中利用MO组件在图层中画多边形 for MO(The use of MO in the VB components in the layers of paint polygon for MO)

电力系统设备安全性评估 主要针对接入分布式电源的配电网(The safety Calculation of Power system)

由于现代软件中，很多时候需要保留一些配置信息，而ini文件就是其中的方法之一，该工程简单而详细体现了ini文件的读写调用方式(Because of modern software, often need to retain some configuration information, and the ini file is one of the ways that the project reflects the simple and detailed invocation ini file read and write)

MDI Spliter Example. this is a vb6.0 MDI Exaple . It Explain how to create a spliter in MDI form

vb编写的usb12通道的数据采集系统，由于时间匆忙，界面做得一般，还请大家见量(vb prepared usb12 channel data acquisition system, as time rush, the general interface done, Please also see the volume)