"Compact Disk" is Shortly called as "CD".Its is optical disk which is used to store a digital-est data.Its originally developed to record a sound clipping. Sony first publicly demonstrated an optical digital audio disc in September 1976. In September 1978 they demonstrated an optical digital audio disc with a 150 minute playing time, and with specifications of 44,056 Hz sampling rate, 16-bit linear resolution, cross-interleaved error correction code, that were similar to those of the Compact Disc introduced in 1982.
Standard CD have a diameter as 120 millimeter.its can able to hold up to 80 minutes of uncompressed audio or 700 MB (700 × 220 bytes) of data.
How Compact Disk is made :
How Compact Disk is made :
Tips to remove scratches from CD :
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