Firmware generally refers to a micro program contained in a device’s ROM to control the hardware layer. It can be considered as software in a sense that it is a software program, but it has the properties of both hardware and software as it is closely related to the hardware operation, unlike general application software.
The role of the firmware in the printer is to process the command received through the communication channel and to print the corresponding characters. A certain communication protocol is used in communication between the printer and the host computer, and it is controlled by the firmware.
* If you want to check the firmware version of a BIXOLON printer, run the Self test and check the version and the first line.