ZylSerialPort

Considering that it consists of sending bytes of data one at a time through a serial port over a single communication line, many may think that serial port interface is ancient history. However, if you are using GSM modules, older modem models or bar code readers, then chances are that you might need a software solution that can facilitate this type of communication.
ZylSerialPort is a library of components that enables you to add a function that allows serial port communication with an external device, such as the ones listed above. Besides devices that incorporate the physical port, the component can also work well with IrDA, Bluetooth and USB devices, especially since they come with a driver that redirects the input into a virtual serial port.
In order to use the library, you need to have a Delphi compiler or a C++ Builder installed on your computer. As you probably already hinted, you are required to open the DKP, compile it and then install it and you are going to be able to view the component in the Zyl Soft tab of the palette with the same name.
Once you can preview it in the dedicated tab, you can simply drag and drop it to any form and set its properties by the Object Inspector. From here, you can write handlers for the events that you prefer to occur and add them to favorite by double clicking on them.

System requirements