Technical information

Symbol
NameNegative acknowledge
Unicode numberU+0015
CategoryASCII Table1. ASCII control characters
DescriptionThe Unicode character U+0015, is known as the "Negative Acknowledge". It belongs to the "C0 Controls and Basic Latin" block and falls under the "Other, Control" category in the Unicode standard. This character is a control character in the ASCII standard, used to indicate that a previously sent command or data was received incorrectly. The specific appearance and usage of this character can depend on the system and application in which it is being used.

Encoding

HTML Entity
HTML Entity (hex)
URL Escape Code%15
UTF-8 (hex)0x15
UTF-8 (binary)00010101
UTF-160x0015
UTF-320x00000015

Source Code

C, C++, and Java"\u0015"
CSS Code\0015
JavaScript"\u0015"
Perl\x{0015}
Python 2u"\u0015"
Python 3\u0015
Ruby\u{0015}

Preview

This Unicode character looks like this  in sentence and in bold like this  and in italic like this .

Font size:


12px

16px

20px

28px

36px

48px

72px

CSS Property: font-weight


100

200

300

400

500

600

700

800

900

HTML Forms and Input

input
disabled input

input-group
select
button
button

Code examples in HTML and CSS

<span>&#21;</span>

            
span {
    content: "\0015";
}

The symbol in different fonts


-apple-system

Apple Color Emoji

Arial

BlinkMacSystemFont

Courier New

Georgia

Droid Sans

Helvetica

Noto Sans

Oxygen

Roboto

"Segoe UI"

sans-serif

Segoe UI Emoji

Segoe UI Symbol

system-ui

Times New Roman

Ubuntu

Verdana

References