( SS64 )

ASCII Table

ASCII is a numeric computer code used to represent characters from the English alphabet.

Dec	Hx	Oct	Character	Dec	Hx	Oct	Html	Character	Dec	Hx	Oct	Character	Dec	Hx	Oct	Character
0	0	0	NUL (Null)	32	20	40		[Space]	64	40	100	@	96	60	140	`
1	1	1	SOH	33	21	41	!	!	65	41	101	A	97	61	141	a
2	2	2	STX	34	22	42	"	"	66	42	102	B	98	62	142	b
3	3	3	ETX	35	23	43	#	#	67	43	103	C	99	63	143	c
4	4	4	EOT	36	24	44	$	$	68	44	104	D	100	64	144	d
5	5	5	ENQ	37	25	45	%	%	69	45	105	E	101	65	145	e
6	6	6	ACK	38	26	46	&	&	70	46	106	F	102	66	146	f
7	7	7	BEL	39	27	47	'	'	71	47	107	G	103	67	147	g
8	8	10	Backspace	40	28	50	(	(	72	48	110	H	104	68	150	h
9	9	11	TAB	41	29	51	)	)	73	49	111	I	105	69	151	i
10	A	12	LF Line Feed	42	2A	52	*	*	74	4A	112	J	106	6A	152	j
11	B	13	VT	43	2B	53	+	+	75	4B	113	K	107	6B	153	k
12	C	14	FF Form Feed	44	2C	54	,	,	76	4C	114	L	108	6C	154	l
13	D	15	CR Carriage Return	45	2D	55	-	-	77	4D	115	M	109	6D	155	m
14	E	16	SO	46	2E	56	.	.	78	4E	116	N	110	6E	156	n
15	F	17	SI	47	2F	57	/	/	79	4F	117	O	111	6F	157	o
16	10	20	DLE	48	30	60	0	0	80	50	120	P	112	70	160	p
17	11	21	DC1	49	31	61	1	1	81	51	121	Q	113	71	161	q
18	12	22	DC2	50	32	62	2	2	82	52	122	R	114	72	162	r
19	13	23	DC3	51	33	63	3	3	83	53	123	S	115	73	163	s
20	14	24	DC4	52	34	64	4	4	84	54	124	T	116	74	164	t
21	15	25	NAK	53	35	65	5	5	85	55	125	U	117	75	165	u
22	16	26	SYN	54	36	66	6	6	86	56	126	V	118	76	166	v
23	17	27	ETB	55	37	67	7	7	87	57	127	W	119	77	167	w
24	18	30	CAN	56	38	70	8	8	88	58	130	X	120	78	170	x
25	19	31	EM	57	39	71	9	9	89	59	131	Y	121	79	171	y
26	1A	32	SUB (EOF)	58	3A	72	:	:	90	5A	132	Z	122	7A	172	z
27	1B	33	ESC (Escape)	59	3B	73	;	;	91	5B	133	[	123	7B	173	{
28	1C	34	FS	60	3C	74	<	<	92	5C	134	\	124	7C	174	\|
29	1D	35	GS	61	3D	75	=	=	93	5D	135	]	125	7D	175	}
30	1E	36	RS	62	3E	76	>	>	94	5E	136	^	126	7E	176	~
31	1F	37	US	63	3F	77	?	?	95	5F	137	_	127	7F	177	DEL

Ascii codes from 0 - 127 are identical to Unicode.
Ascii codes from 128 - 255 are known as Extended ASCII but these are now obsolete having been replaced by the widespread adoption of Unicode.
A shortcut method of converting between upper and lower case ASCII characters is to add or subtract 32 (or flip the sixth bit in binary).

“Why shouldn’t we give our teachers a license to obtain software, all software, any software, for nothing? Does anyone demand a licensing fee, each time a child is taught the alphabet?” ~ William Gibson

Related:

Symbols & Smilies - Unicode
Punctuation Marks - Unicode
Colour codes (CSS/HTML)
Cross Site Scripting Prevention - HTML Escaping