The capacity of CD
The amount of data stored in the disc is
the capacity of CD. It is usually measured in MB. A standard CD-R disc is used
to record data, its capacity is 650MB. But now they have large capacity, for
The capacity of CD can also be represented by time. In the
standard speed, the standard capacity is defined as 74 minutes.
High-capacity CD can play 80-minutes (equivalent to 700MB). There are also
two kinds of rare large-capacity CDs for 90 minutes and 99 minutes.
is used to indicate the capacity in two ways, such as the disk shall be marked
"74 minutes, 650MB". Actually, the time is accurate, but with the "MB" of
representation, it is right when the disc is used as a data disc, but as other
types of discs used, its capacity will be more than 650MB.
Here we would
like to set audio CD, data CD, and video CD as examples, their capacity of
sectors are 2352, 2048, 2236 byte and their capacity would be:
Note: The disc capacity in the
formula is measured by 74 minutes, every minute 60 seconds, 75 sectors per read,
audio, CD-ROM for each sector 2352 Bytes, 1KB = 1024B, 1MB = 1024KB.