1. CD-R(光盘-可记录):
CD-R是空白CD,其中数据可以存储一次。存储数据后,将其转换为CD-ROM。它由反射性的金属圆盘制成,顶部有绿色或不透明的染料层。与CD-RW和CD-ROM相比,它更便宜。在CD-R中,数据不能被覆盖。 CD-R的优点在于,任何版本的CD播放器,无论是旧版本还是较新版本,都可以轻松读取CD-R。
2. CD-RW(光盘-可写):
CD-RW是一种可以擦除的CD,可以多次使用。它是由反射金属盘制成,顶部有一层特殊金属。它是所有类型中最便宜的CD。它比CD-R和CD-ROM都昂贵。 CD-RW的缺点是大多数旧版本的CD播放器无法读取它。在某些属性中,它与CD-RW也有一些相似之处。
CD-R和CD-RW之间的区别:
CD-R | CD-RW |
---|---|
It is made of reflective metal disk with layer of dye on top. | It is also made of reflective metal disk but it has special metal on top. |
Data can be stored only once in CD-R. | Data can be stored multiple times in it. |
It can not be erased. | It can be erased. |
After storing data, it is converted into CD-ROM. | Even after storing data, it is CD-RW itself. |
It is cheaper than CD-RW. | It is costly among all CD types. |
Data can not be written over in CD-R. | Data can be changed after writing in it. |
CD-R is more compatible. | CD-RW is less compatible. |
It is effective for long term back-ups. | It is the best for data transferring. |
All CD players i.e. older and newer can read CD-R. | Older CD players can not read CD-RW. |