ASCII Codes

ASCII

The name  ASCII is an abbreviation for “American Standard Code for Information Interchange”. ASCII is prounced as aeski, or ASS- kee and is a character – encoding scheme based on the ordering of the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that use text. Most modern character – encoding schemes, which support many more characters than did the original, are based on ASCII.

Historically, ASCII developed from telegraphic codes. Its first commercial use was as a seven- bit telegraphic codes. Its first commercial use was as a seven – bit teleprinter code promoted by Bell data services.

ASCII is a seven-bit code, which included definitions for 128 characters. The definition of ASCII also specifies a set of 33 control codes (“control characters”) such as linefeed (LF) and escape (ESC). 

Below is an ASCII chart of most of those 127 characters(character 32 thru 126 as they are the most commonly seen). This chart also may help you for the challenges that use character arithmetic and ASCII codes.

Code	Char	Code	Char	Code	Char	Code	Char	Code	Char
32		51	3	70	F	89	Y	108	l
33	!	52	4	71	G	90	Z	109	m
34	"	53	5	72	H	91	[	110	n
35	#	54	6	73	I	92	\	111	o
36	$	55	7	74	J	93	]	112	p
37	%	56	8	75	K	94	^	113	q
38	&	57	9	76	L	95	_	114	r
39	'	58	:	77	M	96	`	115	s
40	(	59	;	78	N	97	a	116	t
41	)	60	<	79	O	98	b	117	u
42	*	61	=	80	P	99	c	118	v
43	+	62	>	81	Q	100	d	119	w
44	,	63	?	82	R	101	e	120	x
45	-	64	@	83	S	102	f	121	y
46	.	65	A	84	T	103	g	122	z
47	/	66	B	85	U	104	h	123	{
48	0	67	C	86	V	105	i	124	|
49	1	68	D	87	W	106	j	125	}
50	2	69	E	88	X	107	k	126	~