系统控制核心采用AT 89 C 2051单片机，信号输出为音响和多组继电器开、闭触点。
The system takes the monolithic computer AT89C2051 as the control kernel, and the tone and contacts of relay as the signal output.
系统控制核心采用AT 89 C 2051单片机，信号输出为音响和多组继电器开、闭触点。
The system takes the monolithic computer AT89C2051 as the control kernel, and the tone and contacts of relay as the signal output.
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