CD-R stands for “Compact Disk Recordable” is a blank cd which is used to record and data. Once the data is recorded cannot be modified forever.

The data burned onto a CD-R disc is everlasting, denotation it can not be distorted or erased like the data on a hard drive.

Some drives use special techniques, such as Plextor’s GigaRec or Sanyo’s HD-BURN, to write more data onto a given disc; these techniques are inherently deviations from the Compact Disc (Red, Yellow, and/or Orange Book) standards, making the recorded discs proprietary-formatted and not fully compatible with standard CD players and drives.

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Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with patenting the first practical telephone.