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介绍了闭路电视系统的组成特点以及PC总线接口板、摄像机终端控制板和图像信号转接板的原理并详细说明了中文式操作菜单的控制功能．
The composition of CCTV system and the principle of PC bus interface board, camera terminal control board and image signal transfer board are introduced and the control functions of Chinese operation menu are described in detail.