vb.net编写的电源管理程序，可以监测设备的电源使用情况。-vb.net write power management program that can monitor the device' s power usage.

Nokia Net Monitor tutorial

使用VB.NET开发环境下的串口监听软件源码；可收发数据（带时间标记）-VB.NET development environment using the serial monitor software source code can send and receive data (with time stamp)

西门子S7协议通讯，使用与S7-200/300/400/1200等所有PLC型号的通信协议，可同时监控几百台PLC。 .C#语言开发，采用NET4.5框架，TCP通讯方式,通信效率高。(Siemens S7 protocol communication, the use of all PLC models such as S7-200/300/400/1200 communication protocols, can simultaneously monitor hundreds of PLC