CD-ROM

CD-ROM stands for "Compact Disc Read Only Memory" and is an external storage medium. In the multimedia age, it became necessary to transfer larger amounts of data such as music, video, application and store game data in a meaningful way. Here, the one equipped with a much higher storage volume solved the problem CD-ROM the floppy disk.

The information layer of the CD-ROM is covered with a layer of plastic that protects it from damage and protects against dirt. The CD-ROM is written and read with a laser beam. The CD-ROM has one Storage capacity 650 to 900 MB and a maximum data transfer rate of up to 6000 KB/s, with the access time can range from around 85 ms to a few hundred milliseconds.

The CD-RW is a variant of the CD-ROM and is short for "Compact Disc Rewritable". This CD can be rewritten many times, erasing and updating the content is also possible.