媒体（Medium）在计算机领域中有两种含义，一是指用以存储信息的实体，如磁盘、磁带、光盘和半导体存储器；一是指信息的载体，如数字、文字、声音、图形图像和视频等。-Media (Medium) in the computer field, there are two meanings, one refers to the entity to store information, such as disk, tape, CD-ROMs and semiconductor memory The f