Network expansion method for application software based on serial device and self-service terminal

Abstract

The invention relates to the field of computer communication and the field of application software programming development, in particular to a network expansion method for computer application software based on a serial device and a universal self-service terminal device, and discloses a universal network expansion method suitable for application software based on a serial device and a universal self-service terminal device constructed based on the method. The difficulty of expansion and upgrade of serial application software of many small and medium-sized management units is overcome. According to the core idea of the method, a virtual serial programming technology is adopted for transmitting-receiving and transferring serial communication data between the application software and the serial device, a traditional development concept limited to hardware and database platforms in the past is broken through, and the method has good feasibility, versatility and compatibility. On the basisof making full use of existing software and hardware, time-sharing multi-terminal network expansion of existing standalone-version serial application software of many small and medium-sized management units and service upgrade integrated with third-party platforms can be quickly realized at a low cost.

Description

technical field [0001] The present invention relates to the field of computer communication and application software programming development, in particular to the network expansion of computer application software based on serial port equipment and general-purpose self-service terminal equipment. Background technique [0002] A serial port device refers to a computer connected to a computer through a serial interface (English serial port is also called a serial communication interface or COM interface, and the appearance is usually a 9-pin trapezoid) and uses a serial communication protocol (commonly used are RS232, RS422, RS485, etc.) An electronic device external to a computer for data communication. [0003] In recent years, with the advancement of technology, a new USB-to-serial device connection mode has been derived, which uses PL2303 and other processing chips to convert serial data and USB data to each other through the USB (Universal Serial Bus) interface. Although...

AI Technical Summary

Problems solved by technology

The method I invented breaks the routine and finds a new way to adopt a new programming idea. It provides a way to expand and upgrade the network of general-purpose serial port application software that is easier to implement, has good compatibility and low cost, and overcomes the high cost of the existing network version upgrade solution. , poor security and other defects

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