This article describes how to use only one computer with Multi Screen graphics card and VGA TV Converter to control display in multi channel big screen, and this method is very helpful in practical application for its practice and cheapness. 从应用实际出发,介绍利用多屏图形卡和VGA-TV转换器,使用一台微机控制多个大屏幕上的信息发布.这种方法具有方便、实用且价格低廉等特点,对实际应用有一定的指导意义。