Ring 0 or zero ring or ''variation'', may refer to:
Arts and entertainment
* ''
Ring 0: Birthday'', a Japanese horror prequel film
** ''
The Ring Volume 0: Birthday'', a subsequent manga
Technology
*
Ring 0 (computer security)
In computer science, hierarchical protection domains, often called protection rings, are mechanisms to protect data and functionality from faults (by improving fault tolerance) and malicious behavior (by providing computer security).
Computer ...
, the highest privilege level
*Telephone dialling instructions to access a
switchboard operator
In the early days of telephony, companies used manual telephone switchboards, and switchboard operators connected calls by inserting a pair of phone plugs into the appropriate jacks. They were gradually phased out and replaced by automated syste ...
Other uses
*
Zero ring
In ring theory, a branch of mathematics, the zero ring or trivial ring is the unique ring (up to isomorphism) consisting of one element. (Less commonly, the term "zero ring" is used to refer to any rng of square zero, i.e., a rng in which fo ...
, the trivial ring in mathematics ring theory
* O̊, the letter "O" with a
ring diacritical mark
See also
*
''Birthday'' (short story collection), a Japanese anthology containing prequels and sequels to ''Ring''
*
Ring road (disambiguation)
A ring road is a road that encircles a town, city or country. The article includes examples of ring roads.
Ring Road may also refer to:
Roads
* List of ring roads
Arts and entertainment
* ''Ring Road'' (film), a 2015 Indian Kannada-language fi ...
*
Ring (disambiguation)
(The) Ring(s) may refer to:
* Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry
* To make a sound with a bell, and the sound made by a bell
Arts, entertainment, and media Film and TV
* ''The Ring'' (franchise), a ...
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