ASCII 21

NEGATIVE ACKNOWLEDGE

Negative acknowledgement reports that a transmission was not received.

This ASCII code is a control character and has no printable Unicode glyph.

ASCII values

Character
NAK
Decimal
21
Hex
15
Octal
025
Binary
00010101
Category
Control character

Copy values

FormatValueAction
CharacterNAK
Decimal21
Hex15
Octal025
Binary00010101