ASCII code table

ASCII code table

The ASCII code can be roughly divided into three parts.
The first part is ASCII non-printable control characters;
The second part is: ASCII printing characters;
The third part is: Extended ASCII print characters.

Part 1: ASCII non-printable memory table

The numbers 0-31 in the ASCII table are assigned control characters to control peripheral devices such as printers. For example, 12 represents the form feed/New Page function. This command indicates that the printer jumps to the beginning of the next page. (0-31 in the parameter ASCII code table)

Part 2: ASCII characters

The number 32-126 is assigned to characters that can be found on the keyboard. It appears when you view or print the document. The number 127 represents the DELETE command. (32-127 in the parameter ASCII code table)

ASCII code table 0-127

 

Bin	Dec	HEX	Abbreviations/characters	Explanation
00000000	0	00	Nul (null)	NULL Character
00000001	1	01	Soh (start of headling)	Title start
00000010	2	02	STX (start of text)	Start of Text
00000011	3	03	Etx (end of text)	Text ended
00000100	4	04	EOT (end of transmission)	Transfer completed
00000101	5	05	Enq (Enquiry)	Request
00000110	6	06	Ack (acknowledge)	Receive notification
00000111	7	07	BEL (Bell)	Ring tones
00001000	8	08	BS (backspace)	Return
00001001	9	09	HT (horizontal tab)	Horizontal Tab
00001010	10	0a	LF (NL line feed, new line)	Line feed key
00001011	11	0b	Vt (vertical tab)	Vertical Tab
00001100	12	0c	Ff (NP form feed, new page)	Page feed key
00001101	13	0d	Cr (carriage return)	Enter key
00001110	14	0e	So (shift out)	No switchover
00001111	15	0f	Si (shift in)	Enable Switch
00010000	16	10	Dle (Data Link escape)	Data Link escape
00010001	17	11	DC1 (Device Control 1)	Device Control 1
00010010	18	12	DC2 (Device Control 2)	Device Control 2
00010011	19	13	DC3 (Device Control 3)	Device Control 3
00010100	20	14	Dc4 (Device Control 4)	Device Control 4
00010101	21	15	Nak (negative acknowledge)	Reject
00010110	22	16	Syn (synchronous idle)	Synchronization idle
00010111	23	17	Etb (end of Trans. Block)	Transfer Block ended
00011000	24	18	Can (cancel)	Cancel
00011001	25	19	EM (end of medium)	Media interruption
00011010	26	1a	Sub (substitute)	Substitutes
00011011	27	1B	ESC (escape)	Overflow
00011100	28	1c	FS (File separator)	File delimiter
00011101	29	1D	GS (group separator)	Group Operator
00011110	30	1e	RS (record separator)	Record delimiter
00011111	31	1f	US (Unit separator)	Unit Separator
00100000	32	20	(Space)	Space
00100001	33	21	!
00100010	34	22	"
00100011	35	23	#
00100100	36	24	$
00100101	37	25	%
00100110	38	26	&
00100111	39	27	'
00101000	40	28	(
00101001	41	29	)
00101010	42	2a	*
00101011	43	2b	+
00101100	44	2c	,
00101101	45	2d	-
00101110	46	2e	.
00101111	47	2f	/
00110000	48	30	0
00110001	49	31	1
00110010	50	32	2
00110011	51	33	3
00110100	52	34	4
00110101	53	35	5
00110110	54	36	6
00110111	55	37	7
00111000	56	38	8
00111001	57	39	9
00111010	58	3A	:
00111011	59	3b	;
00111100	60	3c	<
00111101	61	3D	=
00111110	62	3E	>
00111111	63	3f	?
01000000	64	40	@
01000001	65	41	A
01000010	66	42	B
01000011	67	43	C
01000100	68	44	D
01000101	69	45	E
01000110	70	46	F
01000111	71	47	G
01001000	72	48	H
01001001	73	49	I
01001010	74	4A	J
01001011	75	4b	K
01001100	76	4C	L
01001101	77	4d	M
01001110	78	4e	N
01001111	79	4f	O
01010000	80	50	P
01010001	81	51	Q
01010010	82	52	R
01010011	83	53	S
01010100	84	54	T
01010101	85	55	U
01010110	86	56	V
01010111	87	57	W
01011000	88	58	X
01011001	89	59	Y
01011010	90	5A	Z
01011011	91	5b	[
01011100	92	5C	\
01011101	93	5D	]
01011110	94	5E	^
01011111	95	5f	_
01100000	96	60	`
01100001	97	61	A
01100010	98	62	B
01100011	99	63	C
01100100	100	64	D
01100101	101	65	E
01100110	102	66	F
01100111	103	67	G
01101000	104	68	H
01101001	105	69	I
01101010	106	6a	J
01101011	107	6b	K
01101100	108	6c	L
01101101	109	6d	M
01101110	110	6e	N
01101111	111	6f	O
01110000	112	70	P
01110001	113	71	Q
01110010	114	72	R
01110011	115	73	S
01110100	116	74	T
01110101	117	75	U
01110110	118	76	V
01110111	119	77	W
01111000	120	78	X
01111001	121	79	Y
01111010	122	7A	Z
01111011	123	7b	{
01111100	124	7c	|
01111101	125	7D	}
01111110	126	7E	~
01111111	127	7f	Del (delete)	Delete

 

Part 3: Expanded ASCII printing characters

The expanded ASCII characters meet the requirements for more characters. The expanded ASCII contains the existing 128 characters in ASCII (numbers 0-32 are displayed in the middle), and an additional 128 characters are added, totaling 256 characters. Even with these more characters, many languages still contain symbols that cannot be compressed to 256 characters. Therefore, there are some ASCII variants that include regional characters and symbols. For example, many software programs use ASCII tables (also known as ISO8859-1) for languages in North America, Western Europe, Australia, and Africa.