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In telecommunications, an End-of-Transmission character (EOT) is a transmission control character. Its intended use is to indicate the conclusion of a transmission that may have included one or more texts and any associated message headings.[1]
An EOT is often used to initiate other functions, such as releasing circuits, disconnecting terminals, or placing receive terminals in a standby condition.[1] Its most common use today is to cause a Unix terminal driver to signal end of file and thus exit programs that are awaiting input.
In ASCII and Unicode, the character is encoded at U+0004 <control-0004> . It can be referred to as Ctrl+D, ^D in caret notation. Unicode provides the character U+2404 ␄ SYMBOL FOR END OF TRANSMISSION for when EOT needs to be displayed graphically.[2] In addition, U+2301 ⌁ ELECTRIC ARROW can also be used as a graphic representation of EOT; it is defined in Unicode as "symbol for End of Transmission".[3]
- ^ a b "end-of-transmission character (EOT)". Federal Standard 1037C. 1996. Archived from the original on 2020-11-23. Retrieved 2009-03-15.
- ^ "Control Pictures" (PDF). Archived (PDF) from the original on 2019-01-18. Retrieved 2013-04-06.
- ^ "Miscellaneous Technical" (PDF). Archived (PDF) from the original on 2019-12-30. Retrieved 2013-04-07.