What is ASCII Number?

#whatis #ascii

ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns unique numbers to each character in the English language. ASCII numbers are used to represent text in computers, communication equipment, and other devices that use text.

Each ASCII character is assigned a unique number between 0 and 127. For example, the letter 'A' is assigned the number 65, the letter 'B' is assigned the number 66, and so on. The ASCII table includes characters such as letters, numbers, punctuation marks, and control characters.

ASCII numbers are used to represent text in many programming languages, including JavaScript. In JavaScript, you can use the charCodeAt() method to get the ASCII number of a character in a string.

In addition to ASCII, there are other character encoding standards, such as Unicode, that support a wider range of characters from different languages and scripts. However, ASCII remains an important standard for representing text in computers and communication systems.

Examples

The following table shows all 128 ASCII characters and their corresponding numbers:

Decimal	Binary	Hexadecimal	Octal	HTML	Character	Description
0	00000000	00	0		NUL	Null
1	00000001	01	1		SOH	Start of Header
2	00000010	02	2		STX	Start of Text
3	00000011	03	3		ETX	End of Text
4	00000100	04	4		EOT	End of Transmission
5	00000101	05	5		ENQ	Enquiry
6	00000110	06	6		ACK	Acknowledge
7	00000111	07	7		BEL	Bell
8	00001000	08	10		BS	Backspace
9	00001001	09	11		HT	Horizontal Tab
10	00001010	0A	12		LF	Line Feed
11	00001011	0B	13		VT	Vertical Tab
12	00001100	0C	14		FF	Form Feed
13	00001101	0D	15		CR	Carriage Return
14	00001110	0E	16		SO	Shift Out
15	00001111	0F	17		SI	Shift In
16	00010000	10	20		DLE	Data Link Escape
17	00010001	11	21		DC1	Device Control 1
18	00010010	12	22		DC2	Device Control 2
19	00010011	13	23		DC3	Device Control 3
20	00010100	14	24		DC4	Device Control 4
21	00010101	15	25		NAK	Negative Acknowledge
22	00010110	16	26		SYN	Synchronize
23	00010111	17	27		ETB	End of Transmission Block
24	00011000	18	30		CAN	Cancel
25	00011001	19	31		EM	End of Medium
26	00011010	1A	32		SUB	Substitute
27	00011011	1B	33		ESC	Escape
28	00011100	1C	34		FS	File Separator
29	00011101	1D	35		GS	Group Separator
30	00011110	1E	36		RS	Record Separator
31	00011111	1F	37		US	Unit Separator
32	00100000	20	40		space	Space
33	00100001	21	41	!	!	Exclamation mark
34	00100010	22	42	"	"	Double quote
35	00100011	23	43	#	#	Number
36	00100100	24	44	$	$	Dollar sign
37	00100101	25	45	%	%	Percent
38	00100110	26	46	&	&	Ampersand
39	00100111	27	47	'	'	Single quote
40	00101000	28	50	(	(	Left parenthesis
41	00101001	29	51	)	)	Right parenthesis
42	00101010	2A	52	*	*	Asterisk
43	00101011	2B	53	+	+	Plus
44	00101100	2C	54	,	,	Comma
45	00101101	2D	55	-	-	Minus
46	00101110	2E	56	.	.	Period
47	00101111	2F	57	/	/	Slash
48	00110000	30	60	0	0	Zero
49	00110001	31	61	1	1	One
50	00110010	32	62	2	2	Two
51	00110011	33	63	3	3	Three
52	00110100	34	64	4	4	Four
53	00110101	35	65	5	5	Five
54	00110110	36	66	6	6	Six
55	00110111	37	67	7	7	Seven
56	00111000	38	70	8	8	Eight
57	00111001	39	71	9	9	Nine
58	00111010	3A	72	:	:	Colon
59	00111011	3B	73	;	;	Semicolon
60	00111100	3C	74	<	<	Less than
61	00111101	3D	75	=	=	Equality sign
62	00111110	3E	76	>	>	Greater than
63	00111111	3F	77	?	?	Question mark
64	01000000	40	100	@	@	At sign
65	01000001	41	101	A	A	Capital A
66	01000010	42	102	B	B	Capital B
67	01000011	43	103	C	C	Capital C
68	01000100	44	104	D	D	Capital D
69	01000101	45	105	E	E	Capital E
70	01000110	46	106	F	F	Capital F
71	01000111	47	107	G	G	Capital G
72	01001000	48	110	H	H	Capital H
73	01001001	49	111	I	I	Capital I
74	01001010	4A	112	J	J	Capital J
75	01001011	4B	113	K	K	Capital K
76	01001100	4C	114	L	L	Capital L
77	01001101	4D	115	M	M	Capital M
78	01001110	4E	116	N	N	Capital N
79	01001111	4F	117	O	O	Capital O
80	01010000	50	120	P	P	Capital P
81	01010001	51	121	Q	Q	Capital Q
82	01010010	52	122	R	R	Capital R
83	01010011	53	123	S	S	Capital S
84	01010100	54	124	T	T	Capital T
85	01010101	55	125	U	U	Capital U
86	01010110	56	126	V	V	Capital V
87	01010111	57	127	W	W	Capital W
88	01011000	58	130	X	X	Capital X
89	01011001	59	131	Y	Y	Capital Y
90	01011010	5A	132	Z	Z	Capital Z
91	01011011	5B	133	[	[	Left square bracket
92	01011100	5C	134	\	\	Backslash
93	01011101	5D	135	]	]	Right square bracket
94	01011110	5E	136	^	^	Caret / circumflex
95	01011111	5F	137	_	_	Underscore
96	01100000	60	140	`	`	Grave / accent
97	01100001	61	141	a	a	Small a
98	01100010	62	142	b	b	Small b
99	01100011	63	143	c	c	Small c
100	01100100	64	144	d	d	Small d
101	01100101	65	145	e	e	Small e
102	01100110	66	146	f	f	Small f
103	01100111	67	147	g	g	Small g
104	01101000	68	150	h	h	Small h
105	01101001	69	151	i	i	Small i
106	01101010	6A	152	j	j	Small j
107	01101011	6B	153	k	k	Small k
108	01101100	6C	154	l	l	Small l
109	01101101	6D	155	m	m	Small m
110	01101110	6E	156	n	n	Small n
111	01101111	6F	157	o	o	Small o
112	01110000	70	160	p	p	Small p
113	01110001	71	161	q	q	Small q
114	01110010	72	162	r	r	Small r
115	01110011	73	163	s	s	Small s
116	01110100	74	164	t	t	Small t
117	01110101	75	165	u	u	Small u
118	01110110	76	166	v	v	Small v
119	01110111	77	167	w	w	Small w
120	01111000	78	170	x	x	Small x
121	01111001	79	171	y	y	Small y
122	01111010	7A	172	z	z	Small z
123	01111011	7B	173	{	{	Left curly bracket
124	01111100	7C	174	\|	\
125	01111101	7D	175	}	}	Right curly bracket
126	01111110	7E	176	~	~	Tilde
127	01111111	7F	177		DEL	Delete

References

ASCII Number Wikipedia

DEV Community

What is ASCII Number?

Examples

References

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