"51单片机驱动LED点阵的大型公路收费系统设计与实现"
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The document "Design of Large-scale Highway Toll Collection System based on 51 Single Chip Microcomputer" introduces the internal configurations, operational principles, and programming methods of the 51 series single chip microcontroller. It also discusses the driver circuit and connection methods for cascading LED dot matrix displays, as well as the method for controlling the display content through column scanning mode. The large-scale highway toll collection system designed in this project utilizes the 51 series single chip microcontroller as the core for processing and controlling the toll system. It is capable of vehicle detection, LED dot matrix display, and voice broadcasting functions. Vehicle detection is manually done by identifying vehicles passing through a sensor and inputting the corresponding vehicle type through buttons. The LED dot matrix displays the vehicle's type and remaining balance for easy reference, and a voice chip is used for broadcasting information. Through physical circuit verification, the stability and feasibility of the designed hardware circuit were proven. This project successfully implemented the functions of a highway toll collection system with the 51 microcontroller as the core. Keywords: 51 Single Chip Microcontroller, Voice Broadcasting, LED Dot Matrix Display.
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