Home > Computer Basics

Compact Disk Rewritable CD R/W

The CD-RW optical disk can be repeatedly written and over written as with a magnetic disc. The “phrase change” which is purely optical approach has proved efficiently.

The phrase change disk uses a material that has been two significantly different reflectivities in two different phase states and they are Amorphous State and Crystalline State.

Amorphous state, in which the molecules exhibit a random orientation and reflects lightly poorly whereas crystalline state has a smooth surface that reflects light well.

A beam of laser light can change the material from one phase to another. It can be used between 500,000 to 1,000,000 erase cycles.

The primary disadvantages is that the material eventually (gradually) and permanently loses its desirable properties.

More Information
DDR RAM
Hard Disk Drive
Hard Disk Partitioning
Integrated Device Electronics - IDE
Input Output I/O
Hyper-threading
Firmware
Local Area Network LAN
Wireless Fidelity Networks
Personal Digital Assistance PDA
Proxy Servers
computer Servers
Ditial Video Interface
Parallel ATA Technology
Firewire
Internet Firewall
TCP Mail System
Web Designing Services
Operating System Installation Guide
Original Equipment Manufacturer - OEM

Related Information
RAID Data Recovery
SCSI Tape Drives
Laptop Hard Disk
Mutual Funds
Project Management