这些模板安装在一一个可移动的端子板上，如下图所示高密度模板;每个高密度模板有32个点，这些模板或者有一个50针的连接器或者有两个24针的连接器安装在模板的面板上,连接选择在本章稍后有相关说明.标准密度数字t Vo模板特点标准密度(16点或更少)数字量I/0模板有如下特点
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