Fiscal Cash Register Design And Realization

Embedded system applications in the 21st century, more and more widely, various industries for its performance and functionality of each system have become increasingly demanding, Fiscal Cash Register is a typical embedded system is a commercial cash register functions and the combination of tax control function, widely used in food industry, services, entertainment and other industries. It can be independent, accurate collection of business taxes, effectively prevent the illicit business tax evasion, tax evasion and other acts against counterfeit bills to regulate the taxation system, the protection of national taxes. According to statistics, the national taxpayer under the current terms, at least tens of millions of tax-controlled cash register each grade of the market demand. State under national conditions of China formulated the "Fiscal Cash Register Standard" - GB18240, provides general requirements for Fiscal Cash Register, test methods and inspection rules.The program developed to meet the national standards Fiscal Cash Register in under the request of the hardware design considerations, cost-effective and high-reliability, software design considerations, system stability and reliability, according to this principle, the use of "JZ4730 hardware platform + CE -Linux operating system + software "approach to achieve the major peripheral functions, significantly reducing system cost, with high cost performance and competitive advantage. This paper discusses the fiscal cash register based on embedded system design and implementation, hardware and software into two parts described in detail. Hardware part: the choice of the chip, the main technical specifications, the use of standards and performance parameters, PCB board design; focuses on the hardware schematic design include power modules, hardware, reboot and interrupt module, Ethernet module and out Electrical Protection Module; finally a little about the reliability design and EMC design. Software components: a brief introduction driver design and application design.The Fiscal Cash Register is designed to ensure the correct operation of data generated, reliable storage and secure delivery. Tax authorities can achieve management and data verification requirements.