How do I setup and use an OPC device? [Article]
OPC stands for Open Process Control (previously stood for Object Linking and Embedding for Production Control, but the OLE technology has been replaced by Active X). An OPC ser
How to test SMTP communication through telnet [Article]
Sometimes, it is necessary to test SMTP (Simple Mail Transport Protocol) to verify that a particular client can access and send email. This can be done by using the telnet application.