Method for storing and managing data of electronic cash register and system

Abstract

The invention discloses a method for storing and managing data of an electronic cash register and a system. The method includes steps of erasing an integral page of a NORFLASH memory into a 0xFF state and the like. The system comprises a single chip microcomputer, the single chip microcomputer is connected with the NORFLASH memory by an address line and a data line, an input end of the single chip microcomputer is connected with a reset circuit, an electronic lock and a keyboard, an output end of the single chip microcomputer is connected with a display screen, another output end of the single chip microcomputer is connected with an FPGA (field programmable gate array) chip, and the FPGA chip is provided with an interface connected with a printing head. The characteristics of high capacity and fast reading and writing of the FLASH memory are utilized and combined with the characteristics of the method for storing and managing data, the service life of the memory can be greatly prolonged, the FLASH memory which replaces an SRAM (static random access memory) is stable and reliable, a backup battery used for supplying power is omitted, cost is saved, the performances of the electronic cash register are improved, and the service life of the electronic cash register is prolonged. The method and the system are applied to the electronic cash register.

Description

technical field [0001] The invention relates to a data storage management method and an application system thereof, in particular to a data storage management method and system of an electronic cash register. Background technique [0002] The product information and inventory data of traditional electronic cash registers are stored in static random access memory (SRAM). As we all know, SRAM can only work when there is power supply. Once the power is turned off, the data stored in SRAM will be lost. . Therefore, the motherboard of the electronic cash register is generally equipped with a battery that supplies power to the SRAM. The battery on the motherboard and the SRAM are used to store the inventory data of the commodity data set all the year round. Once the battery needs to be replaced or the battery is damaged, the commodity data stored in the SRAM and All inventory data will be lost. Moreover, when the cash register is not used for a long time, if the battery on the m...

AI Technical Summary

Problems solved by technology

Therefore, the motherboard of the electronic cash register is generally equipped with a battery that supplies power to the SRAM. The battery on the motherboard and the SRAM are used to store the inventory data of the commodity data set all the year round. Once the battery needs to be replaced or the battery is damaged, the commodity data stored in the SRAM and All inventory data will be lost

Moreover, if the cash register is not used for a long time, if the battery on the motherboard is discharged, the product information and inventory data inside the cash register will also be lost.

The technical solution of traditional electronic cash registers using batteries and SRAM to save data cannot overcome the technical problem that data is easily lost, which brings great inconvenience to electronic cash register users

At the same time, the SRAM chip has a disadvantage of low capacity and high price. In the face of supermarkets or electronic cash registers with a wide variety of product materials, the data storage scheme of SRAM and batteries cannot meet the large data volume requirements of modern electronic cash registers.

[0003] Now there are many kinds of data memory on the market, such as electrically erasable programmable read-only memory (EEPROM), ferroelectric memory, etc. These memories have their own characteristics, but they are also the same in terms of storage capacity, service life, read and write speed, etc. It cannot meet the functional requirements of modern electronic cash registers, such as large storage capacity, fast reading and writing speed, and long service life.

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