说明：  这里对于摄像头的使用加以补充。摄像头也可用于普通文字的扫描，以解一时之需。这里需要的软件是Office 2003，以前的版本不能实现该功能。
(Here for the use of cameras to be added. Camera can also be used for ordinary text scanning, to relieve temporary relief. Here the need for software is Office 2003, previous versions not the feature.)