目前计算机上用的是小型光盘只读存储器(Compact Disc-Read Only Memory,缩写为CD-ROM),它的外形大小和立体声音响设备的激光唱盘(Compact Disc-Digital Audio,缩写为CD-DA)是一样的。但CD-ROM盘上的信息存储格式和激光唱盘存储歌曲的格式是不一样的。如果把激光唱盘放在计算机的CD-ROM驱动器中,一般都不能工作,并显示错误信息,但计算机中配上能读激光唱盘的软件,计算机是能够播放歌曲的。CD-ROM类型的光盘上由三层不同物质的圆盘组成:底层是坚硬的塑料聚碳酸脂薄膜,它具有很好的透明度,称为塑料衬底;中间一层是极薄的铝箔,当 At present, the computer uses a Compact Disc-Read Only Memory (compact disc-read only memory, abbreviated as CD-ROM), its size and compact disc-digital audio (CD-DA) it’s the same. However, the format of information stored on a CD-ROM disc is different from that of a compact disc on a CD-ROM. If you put a laser disc on your computer’s CD-ROM drive, you will generally not be able to work and display the wrong message, but the computer is equipped with a CD-ROM capable software that allows the computer to play songs. CD-ROM type disc consists of three different disc material composition: the bottom is a hard plastic polycarbonate film, it has good transparency, known as the plastic substrate; the middle layer is a very thin aluminum foil, when