External hanging tax controller and control method thereof

Abstract

The invention discloses an external hanging tax controller, which comprises an IC card reader, a memory, user interfaces and a central processing unit, wherein the central processing unit is connected with the IC card reader through a universal asynchronous receiver and transmitter, and is connected with the memory and the user interfaces through a bus; the memory comprises a tax control processing program, an embedded controller program, a program unit of a network service program, and a data unit used for storing tax control data; one of the user interfaces is a network interface; and the central processing unit is connected with a network control chip through a bus, accesses a public gateway through the network interface, and interacts data with computers in a local area network. The external hanging tax controller can perform tax control related operation through authority allotment and identity authentication for various computers in the network, effectively avoids the occurrence of the condition that a one-to-one external hanging tax controller is susceptible to computer virus infection to cause paralysis of a tax control system, and improves the flexibility of the external hanging tax controller in application environment and the diversity of control methods for the external hanging tax controller.

Description

technical field [0001] The invention relates to an electronic control device, in particular to a plug-in tax control device which is connected with a computer and has a tax control function, and belongs to the field of electronic communication applications. Background technique [0002] Tax controller refers to an electronic device that realizes tax control functions with the cooperation of computers or other electronic equipment. It can ensure the correct generation, reliable storage and safe transmission of business data in places where commercial activities occur, and meet the management and data verification requirements of tax authorities. The tax controller is a legally serious and indestructible device with tax calculation functions. It is not only a right-hand man for the management of commercial enterprises, but also a law enforcement representative for tax officers to collect sales data in places where commercial activities occur. The tax control data generated by...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a plug-in tax controller and its control method, which overcomes that the existing plug-in tax controller can only be used online with a single computer, and must be combined with the background billing software of the tax controller, which is easily affected by the computer network. Defects and problems of tax control system paralysis caused by virus infection, improve the application flexibility of plug-in tax controllers and the diversity of control methods, and provide an effective way to deal with system paralysis caused by computer viruses and cannot be repaired in time , a viable solution

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