It analyzed the factors affecting the Operational Data Quality, determined the evaluation index system, set up Operational Data Quality evaluation element and evaluating network, established the six-element evaluation model. Using Rough Set theory come to realize information reduction and using BP Neural Network theory come to realize quality evaluation. This method could enhance the scientificity and objectivity of evaluation. The results showed that the evaluation method of error was small, simple and practical.
The digital calendar circuits controlled by 80C52 have been designed based on Proteus simulation software. The whole design process is made of three parts: hardware circuits, software programming and software simulation. Finally, it shows that the circuit design of hardware and software is correct through Proteus software simulation. The method of circuit design is systematic and practical, which will provide certain design ideas and reference value for display circuit in the future.