DAVID G. SIMPSON

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INFORMATION CONTENT

This table shows examples of total information content. Several of the numbers shown here are only very rough estimates. Here 1 B = 1 byte = 8 bits.

 Name  Data Content 
 Punched card  80 B 
 5¼" DD floppy disk  360 KiB 
 3½" DD floppy disk  720 KiB 
 5¼" HD floppy disk  1.2 MiB 
 3½" HD floppy disk  1.44 MiB 
 War and Peace  3 MiB 
 The Bible  4.5 MiB 
 9-track tape (6250 cpi)  140 MiB 
 Encyclopædia Britannica  300 MiB 
 CD-ROM  700 MiB 
 Human DNA1  800 MiB 
 DVD-ROM  4.7 GiB 
 Library of Congress (print)  10 TiB 
 Human brain (est.)2  2.5 PiB 
 The Internet (est.)3  5 EiB 

1 http://en.wikipedia.org/wiki/Human_genome
2 Scientific American Web site, http://www.scientificamerican.com/article.cfm?id=what-is-the-memory-capacity, April 19, 2010.
3 http://www.wisegeek.com/how-big-is-the-internet.htm


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Page last updated: January 14, 2013.