The utility model provides a plug-and-play POS
machine. The plug-and-play POS
machine comprises a main processor, a safety processor, a printing processor, an NFC module, an IC card reading module, a
magnetic stripe card reading module, a
wireless communication module, a
camera module and a 3-inch printer module. Wherein the
USB communication port of the main processor is used for being connected with the
USB communication port of the
electronic cash register; the first serial interface of the main processor is connected with the first serial interface of the security processor; the second serial interface of the main processor is connected with the first serial interface of the printing processor; the
wireless communication module and the
camera module are electrically connected to the main processor; the safety processor is electrically connected with the NFC module, the IC card reading module and the
magnetic stripe card reading module at the same time; the printing processor is electrically connected to the 3-inch printer module. According to the utility model, the 3-inch printer and the POS
machine are effectively combined, and are linked with the
electronic cash register through the
USB, so that the equipment cost is effectively reduced, the
equipment use efficiency is improved, and meanwhile, the
plug and play can be realized, that is, the cash register
system does not need to be debugged and butted with
SaaS software.