Design of the USB download interface based on embedded POS

The embedded POS machine was widely applied by people for its advantages like low power consumption, compact construction and easy to maintenance. The internal data of previous POS machines were generally transmitted through the network to the PC storage. This paper puts forward a kind of method that take LPC1766 as the micro-controller to build a USB download interface circuit. Through loading firmware procedures, drivers and applications, when in the conditions that network was interrupted or breakdown, users could download the data of POS machine to the external storage through this interface for preservation and management.