ASCII control characters
⠿▚≡

U+0001
Control: START OF HEADING

U+0002
Control: START OF TEXT

U+0003
Control: END OF TEXT

U+0004
Control: END OF TRANSMISSION

U+0005
Control: ENQUIRY

U+0006
Control: ACKNOWLEDGE

U+0008
Control: BACKSPACE
	
U+0009
Control: CHARACTER TABULATION
U+000A
Control: LINE FEED (LF)

U+000B
Control: LINE TABULATION

U+000C
Control: FORM FEED (FF)
U+000D
Control: CARRIAGE RETURN (CR)

U+000E
Control: SHIFT OUT

U+000F
Control: SHIFT IN

U+0010
Control: DATA LINK ESCAPE

U+0011
Control: DEVICE CONTROL ONE

U+0012
Control: DEVICE CONTROL TWO

U+0013
Control: DEVICE CONTROL THREE

U+0014
Control: DEVICE CONTROL FOUR

U+0015
Control: NEGATIVE ACKNOWLEDGE

U+0016
Control: SYNCHRONOUS IDLE

U+0017
Control: END OF TRANSMISSION BLOCK

U+0018
Control: CANCEL

U+0019
Control: END OF MEDIUM

U+001A
Control: SUBSTITUTE

U+001B
Control: ESCAPE

U+001C
Control: INFORMATION SEPARATOR FOUR

U+001D
Control: INFORMATION SEPARATOR THREE

U+001E
Control: INFORMATION SEPARATOR TWO

U+001F
Control: INFORMATION SEPARATOR ONE
Character codes from 0 to 31: The ASCII control characters are the first 32 codes. These are used to control printers and other peripherials. They are not visible and they render blank if displayed on the screen:
null character, start of heading, start of text, end of text, end of transmission, enquiry, acknowledge, bell, backspace, character tabulation, line feed (lf), line tabulation, form feed (ff), carriage return (cr), shift out, shift in, data link escape, device control one, device control two, device control three, device control four, negative acknowledge, synchronous idle, end of transmission block, cancel, end of medium, substitute, escape, information separator four, information separator three, information separator two, information separator one
ASCII Table - List of ASCII Characters and Codes
The ASCII table lists the first 256 character codes. ASCII is an abbreviation of American Standard Code for Information Interchange, pronounced as ASS-kee. It's a character encoding standard. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character-encoding schemes are based on ASCII, although they support many additional characters.