该系统的工作过程为：当用户输入预先存储在存储器中的密码时，显示器提示相关信息，按开锁键，发光二极管亮，继电器动作门打开；反之，显示器提示错误信息，继电器不动作。-The operation of this system is: when the user enters the password stored in the memory, the display prompts relevant information, press the unlock button, the LED lights, doors open relay　conversely, display an error message, the relay does not operate.