The periphery output control system is composed of analog peripheral device such as LED, relay, digital switch etc, to control the other weak-current devices and general heavy-current devices.
外围输出控制系统由发光二极管、继电器、数字开关等模拟外围设备，控制其它的弱电设备和一般的强电设备。
Traditional control device design adopts analog output interface, with the development of computer technology, develop various interface is imperative.
传统操控器白勺设计均采用模拟输出接口，随着计算机技术白勺开展，开发多种接口类型势在必行。
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