The design of the intelligent access control system mainly includes STM32 MCU system, fingerprint module, RFID module, relay control circuit, key module circuit, LCD12864 display circuit and power conversion module. Through the fingerprint module and RFID module to open the corresponding relay, so as to unlock. The software system adopts the idea of module design, and C language is chosen as the main language of program design. Keil5 software is used for program design. In this paper, the flow chart of each module and the idea of program operation are designed.<br>
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