The solution came with the Virtual Serial Port Kit. It can emulate unlimited number of serial ports and connect each pair of them via a virtual null-modem cable.

A serial port is a serial communication physical interface through which information transfers in or out one bit at a time. Throughout most of the history of personal computers, data transfer through serial ports connected the computer to devices such as terminals and various peripherals.

There are two applications which are exchanging data via serial ports. These programs should be connected and a null-modem cable is used for it.

There are several problems you can come across:

• There are no two serial ports on your PC.
• All serial ports are already occupied.
• It is necessary to connect several pairs of programs simultaneously and one null-modem cable is not enough.

Here comes the question if there is the way out of this. The solution came with the Virtual Serial Port Kit. It can emulate unlimited number of serial ports and connect each pair of them via a virtual null-modem cable.

So applications can exchange data just like they do via hardware serial ports and real null-modem cables.

For example, using Virtual Serial Port Kit it is possible to create pairs of virtual serial ports (e.g. COM7 and COM8) and connect two applications to them. All data that the first application writes to COM7 is read from COM8 by the second application, and vice versa.

It is easy to test. One can run two copies of terminal program (e.g. standard Windows HyperTerminal) and connect them to COM7 and COM8.

So, all typed in the first HyperTerminal will appear in the second and vice versa. One can also transfer files between HyperTerminals and do anything.

This program is ideally suitable for serial software developers. It allows to speed up development process during debugging and data-logging period. One can debug your program (which uses serial port) by connecting it to another program (e.g. serial device emulator). It can be easily integrated into any application.

Detailed information is available at http://virtual-serial-port.com