The design is to rely on micro-controller core, access control devices, combined with key circuit, LCD display circuit, the alarm indicating circuit, lock body, the radio module circuit, using micro-controller involved in programming flexibility and rich I/O ports, and control the accuracy of the software program to control the whole system to achieve the basic functions of electronic access control system. Access control system, also known as entrance door system of systems. Where and who is released, when to sound the alarm, the process of memory out of hunger, to achieve security.

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