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General information

ID 1
HEX 1
Char 
Char type Control
Unicode name
Extended name <control-0001>
Unicode group Basic Latin
Unicode Code Point U+1

Conversion (How to escape )

HTML Entity (decimal) 
HTML Entity (hex) &#x1;
URL Encoded %1
C / C++ / Java "\u1"
Javascript (ASCII) "\x1"
Javascript (UTF-16) "\u0001"
Javascript "\u{1}"
Python u"\u1"
CSS \1
CSS \000001

How to type 

Microsoft Windows ALT code Alt + 1
Microsoft Office write 1 then press Alt + X
Microsoft Office (alternative) write U+1 then press Alt + X
Apple Mac Hold Alt, type 1 then release
Apple Mac (alternative) Hold Option, type 1 then release
Unix GTK Hold Ctrl + Shift, type u 1, then release.
Unix GTK (Alternative) Press Ctrl + Shift + u, type 1, then press Enter.

UTF Encodings

UTF-8 (hex) 01
UTF-8 (octal) 1
UTF-8 (binary) 00000001
UTF-16 (hex) 00 01
UTF-16 (octal) 0 1
UTF-16 (binary) 00000000 00000001
UTF-32 (hex) 00 00 00 01
UTF-32 (octal) 000 000 000 001
UTF-32 (binary) 00000000 00000000 00000000 00000001

IMAGE

 Basic Latin Unicode U+1  Basic Latin Unicode U+1