The Design And Implementation Of Payment Software With Contactless Ic Cards

Based on theory of software architecture and relational database application, this article described how to design and implement payment software with the popular contactless IC cards, Mifare MF1 IC S50. This article means to give directions to engineers who working in computer information system integration areas and wanting to develop generic software about contactless IC card which exactly meat the demands of the market.The payment software related with contactless IC card has a core demand-paying with a card. Lots of extended demands come from the idea. This article intuitively described those extended demands with a mind map and demands table.The software overall design includes module design, hierarchical structure design, interface define, etc. Finished the overall design, this article took a detail issue on system data structure design. ER(Entity-Relationship) mode is the main function for establish database structure model. In addition, this article designed the structures of Mifare MF 1 IC S50 card files.Generic application software related with contacted IC card must resolve the reusable reader interface. Based on abstract mechanism, this article defined a reusable reader interface, programmer can quickly finish cumstomization for a new type reader without modify any upper code just by implement the interface.C++ language supports many program design styles, like structured design, data abstraction, object-oriented, etc. This artile described the design and implementition process of the POS subsystem software by using Microsoft visual C++ 6.0 tools.In addition, this article briefly descrbed how to develop an Embedded Operating System-Windows XP Embedded, witch may come to the planform of the POS software.