U+0015 Negative Acknowledge *
U+0015 was added in Unicode version 1.1 in 1993. It belongs to the block
This character is a Control and is commonly used, that is, in no specific script. Znak jest również znany jako NEGATIVE ACKNOWLEDGE.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Boundary Neutral. When changing direction it is not mirrored. U+0015 prohibits a line break before it.
Wikipedia ma następujące informacje na temat tej współrzędnej kodowej:
In data networking, telecommunications, and computer buses, an acknowledgment (ACK) is a signal that is passed between communicating processes, computers, or devices to signify acknowledgment, or receipt of message, as part of a communications protocol. The negative-acknowledgement (NAK or NACK) is a signal that is sent to reject a previously received message or to indicate some kind of error. Acknowledgments and negative acknowledgments inform a sender of the receiver's state so that it can adjust its own state accordingly.
Many protocols contain checksums to verify the integrity of the payload and header. Checksums are used to detect data corruption. If a message is received with an invalid checksum (that is, the data received would have a different checksum than the message had), the receiver can know that some information was corrupted. Most often, when checksums are employed, a corrupted message received will either not be served an ACK signal, or will be served a NAK signal.
Reprezentacje
System | Reprezentacje |
---|---|
Nº | 21 |
UTF-8 | 15 |
UTF-16 | 00 15 |
UTF-32 | 00 00 00 15 |
Adres URL cytowany | %15 |
HTML hex reference |  |
Błędne windows-1252 Mojibake | â• |
Caret Notation | ^U |
sterowanie | NEGATIVE ACKNOWLEDGE |
skrót | NAK |
alias | NEGATIVE ACKNOWLEDGE |
Adobe Glyph List | controlNAK |
dwuznak | NK |
Gdzie indziej
Kompletny opis
Właściwość | Wartość |
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1.1 (1993) | |
— | |
NEGATIVE ACKNOWLEDGE | |
Basic Latin | |
Control | |
Common | |
Boundary Neutral | |
Not Reordered | |
none | |
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✘ | |
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✘ | |
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✘ | |
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✘ | |
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✘ | |
✘ | |
✘ | |
✘ | |
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Control | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
0 | |
0 | |
0 | |
✘ | |
None | |
— | |
NA | |
Other | |
— | |
✘ | |
✘ | |
✘ | |
✘ | |
Yes | |
Yes | |
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Yes | |
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Yes | |
✘ | |
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Other | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
Other | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
✘ | |
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None | |
neutral | |
Not Applicable | |
— | |
No_Joining_Group | |
Non Joining | |
Combining Mark | |
none | |
not a number | |
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R |