Possibility to rewrite CD-ROM

1997/06/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

• Materialak

We know that advances in the world of computing occur at a dizzying pace. This time we have to talk about the new CD-RW, the CD-ROM that can be rewritten or re-recorded. This CD, recently presented in the German city of Hannover, allows reading and recording all types of digital data: Backup, hifi sound or PC video file. You can delete and reuse the disk.

On CD-RW discs a special recorder is needed to write data, but to read these discs you can use new generation CD-ROM devices thanks to the Multiread circuit they carry.

The CD-ROMs made to date were made of plastic, engraved with laser light. Once recorded the information could not be rewritten about it. The new CD-RW are composed of a silver alloy, Indian, anthomony and tellurium. This alloy is crystal clear and an excellent light reflector. This allows rewriting to the disk. Major computer companies are gradually launching this new system. At the moment the CD-RW are quite expensive, but experts say they will soon be marketed.