1、首先，我们必须将投影仪的视频输入接口连接到电脑的视频输出接口，然后投影仪上就会出现当前电脑上的画面，现在一般用HDMI线，链接电脑投影音视频都搞定了，以前的电脑一般没有HDMI接口，如果需要音频输[详细]
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