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Digital Units

Digital units and their relative capacities1:

Byte: (100 bytes)
A single digital character.
Kilobyte: (103 bytes)
A small page of digital text.
Megabyte: (106 bytes)
A small novel, or a screen-resolution digital image.
Gigabyte: (109 bytes)
A symphony in hi-fi sound, or a pickup truck filled with paper.
Terabyte: (1012 bytes)
One-tenth of the printed collection of the Library of Congress.
Petabyte: (1015 bytes)
All of the email produced in the world in one day, or about a half-million hours worth of television.
Exabyte: (1018 bytes)
Two exabytes estimated to be all the information generated worldwide in one year; five exabytes, all the words ever spoken by human beings.
Zettabyte: (1021 bytes)
Oprah Winfrey’s annual salary.
Yottabyte: (1024 bytes)
Alot.

Footnotes

  • 1 Source: UC Berkeley (404 link removed)

Jeff Starr
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