By established but arbitrary convention, a byte usually comprises 8 bits (23 bits), a kilobyte 103 bytes or 210 bits, a megabyte 106 bytes or 220 bits and so on so forth. In 2002, the world created 5 exabytes (5x1018 bytes) of new information stored on media such as hard disks, DVDs and paper.
For Complete-IIPM Article, Click here
For Complete-IIPM Article, Click here
Source:-IIPM-Editorial,2006