The system is based on 51 single-chip microcomputer and database technology, and consists of a PC management host and multiple scoring terminals. It supports both wired and wireless working modes. It is suitable for on-site scoring and subsequent data work such as additional tests for arts and sports examinations, art competitions, and sports competitions. It has the characteristics of fast processing speed, simple operation, and safe and reliable data. This article introduces the system structure and functions in detail, and gives the specific hardware composition, software process, and key technologies in the development process. The handwritten scoring of judges on the spot is a common scoring method for additional tests for sports and arts and sports and arts competitions. After scoring, it is summarized by a dedicated person and input into the computer for data processing and storage. The entire workflow is time-consuming and laborious, especially in terms of data security. There are hidden dangers, and there is the possibility of modifying the score and cheating. The serial port on-site scoring system introduced in this article consists of a management host and a scoring terminal extension, and has the advantages of fast processing speed and simple system composition. The system uses RS-232 serial port to realize the communication between PC management host and scoring terminal, supporting both wired and wireless communication modes. The terminal uses embedded single-chip microcomputer 8031 as processor, uses keyboard to input scoring and display, and sends the scoring back to PC for archiving. The PC is mainly responsible for database management and uses the established algorithm to process the received judges\' scores to obtain the final results for display on the large screen at the competition site, and automatically stores them in the database. The database is set to read-only mode that can only be queried but not modified or deleted. The whole process eliminates the possibility of human contact with data, ensures the security and fairness of data, reduces the labor intensity of staff, and significantly improves its efficiency and data accuracy.
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