The connection by serial cable between one computer and another is a method that can be employed when recycling old equipment for new purposes. It is a method that you can do use to allow a channel of communication between the computers (or other like devices such as networking equipment control ports) when a more prevalent method of networking with RJ45 Ethernet networkingis not available or desired.
1First a cable must be obtained for the connection.For tips of how this can be done please see the #TIPS section of this page
2Enter the cable to each of the computers via the Serial port.It is important not to get confused between the "Serial Comms" port and the "Universal Serial Bus Port".
3Start up a Serial Communication program.Often people have a Windows by Microsoft operating system - and by a default the most used program for this is Hyper Terminals.
4Select the correct Serial Port from the File/New Connection menu item
5The two computers are now connected physically and a communication path has been created between them.You can now send text characters between the computers using the HyperTerminal application.