摘要
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 structure feature of CCTV system and the principle of PC bus interface board, camera terminal control board, image signal exchange board is introduced. The control function of the Chinese character operation menu is explained in detail.
