American Standard Code for Information Interchange (ASCII), (…) is a character encoding based on the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that work with text. (…)
It currently defines codes for 128 characters: 33 are non-printing, mostly obsolete control characters that affect how text is processed, and 95 are printable characters. –Quote from Wikipedia (http://en.wikipedia.org/wiki/Ascii)

Detailed ASCII TABLE [Non-Printable Characters]

ASCII reserves the first 32 codes (numbers 0-31 decimal) for control characters: codes originally intended not to carry printable information, but rather to control devices (such as printers) that make use of ASCII, or to provide meta-information about data streams such as those stored on magnetic tape. –Quote from Wikipedia (http://en.wikipedia.org/wiki/Ascii)

CHAR	BIN	OCT	DEC	HEX	HTML Number	HTML Name	DESCRIPTION
[NUL]	00000000	000	0	00			null character
[SOH]	00000001	001	1	01			start of heading
[STX]	00000010	002	2	02			start of text
[ETX]	00000011	003	3	03			end of text
[EOT]	00000100	004	4	04			end of transmission
[ENQ]	00000101	005	5	05			enquiry
[ACK]	00000110	006	6	06			acknowledgment
[BEL]	00000111	007	7	07			audible bell
[BS]	00001000	010	8	08			back space
[HT]	00001001	011	9	09			horizontal tab
[LF]	00001010	012	10	0A			line feed
[VT]	00001011	013	11	0B			vertical tab
[FF]	00001100	014	12	0C			form feed
[CR]	00001101	015	13	0D			carriage return
[SO]	00001110	016	14	0E			shift out
[SI]	00001111	017	15	0F			shift in
[DLE]	00010000	020	16	10			data link escape
[DC1]	00010001	021	17	11			device control 1
[DC2]	00010010	022	18	12			device control 2
[DC3]	00010011	023	19	13			device control 3
[DC4]	00010100	024	20	14			device control 4
[NAK]	00010101	025	21	15			negative acknowledge
[SYN]	00010110	026	22	16			synchronous idle
[ETB]	00010111	027	23	17			end of transmit block
[CAN]	00011000	030	24	18			cancel
[EM]	00011001	031	25	19			end of medium
[SUB]	00011010	032	26	1A			substitution
[ESC]	00011011	033	27	1B			escape
[FS]	00011100	034	28	1C			file separator
[GS]	00011101	035	29	1D			group separator
[RS]	00011110	036	30	1E			record separator
[US]	00011111	037	31	1F			unit separator

Detailed ASCII TABLE [Printable Characters]

Code 32, the “space” character, denotes the space between words, as produced by the space-bar of a keyboard. Codes 33 to 126, known as the printable characters, represent letters, digits, punctuation marks, and a few miscellaneous symbols. –Quote from Wikipedia (http://en.wikipedia.org/wiki/Ascii)

CHAR	BIN	OCT	DEC	HEX	HTML Number	HTML Name	DESCRIPTION
	00100000	040	32	20			space
!	00100001	041	33	21	!		exclamation mark
“	00100010	042	34	22	"	"	double quotes
#	00100011	043	35	23	#		number sign
$	00100100	044	36	24	$		dollar sign
%	00100101	045	37	25	%		percent sign
&	00100110	046	38	26	&	&	ampersand
‘	00100111	047	39	27	'		single quote
(	00101000	050	40	28	(		opening parenthesis
)	00101001	051	41	29	)		closing parenthesis
*	00101010	052	42	2A	*		asterisk
+	00101011	053	43	2B	+		plus sign
,	00101100	054	44	2C	,		comma
–	00101101	055	45	2D	-		minus sign, hyphen
.	00101110	056	46	2E	.		period, dot
/	00101111	057	47	2F	/		division sign, slash
0	00110000	060	48	30	0		zero
1	00110001	061	49	31	1		one
2	00110010	062	50	32	2		two
3	00110011	063	51	33	3		three
4	00110100	064	52	34	4		four
5	00110101	065	53	35	5		five
6	00110110	066	54	36	6		six
7	00110111	067	55	37	7		seven
8	00111000	070	56	38	8		eight
9	00111001	071	57	39	9		nine
:	00111010	072	58	3A	:		colon
;	00111011	073	59	3B	;		semicolon
<	00111100	074	60	3C	<	<	less than sign
=	00111101	075	61	3D	=		equal sign
>	00111110	076	62	3E	>	>	greater than sign
?	00111111	077	63	3F	?		question mark
@	01000000	100	64	40	@		at symbol
A	01000001	101	65	41	A		capital letter a
B	01000010	102	66	42	B		capital letter b
C	01000011	103	67	43	C		capital letter c
D	01000100	104	68	44	D		capital letter d
E	01000101	105	69	45	E		capital letter e
F	01000110	106	70	46	F		capital letter f
G	01000111	107	71	47	G		capital letter g
H	01001000	110	72	48	H		capital letter h
I	01001001	111	73	49	I		capital letter i
J	01001010	112	74	4A	J		capital letter j
K	01001011	113	75	4B	K		capital letter k
L	01001100	114	76	4C	L		capital letter l
M	01001101	115	77	4D	M		capital letter m
N	01001110	116	78	4E	N		capital letter n
O	01001111	117	79	4F	O		capital letter o
P	01010000	120	80	50	P		capital letter p
Q	01010001	121	81	51	Q		capital letter q
R	01010010	122	82	52	R		capital letter r
S	01010011	123	83	53	S		capital letter s
T	01010100	124	84	54	T		capital letter t
U	01010101	125	85	55	U		capital letter u
V	01010110	126	86	56	V		capital letter v
W	01010111	127	87	57	W		capital letter w
X	01011000	130	88	58	X		capital letter x
Y	01011001	131	89	59	Y		capital letter y
Z	01011010	132	90	5A	Z		capital letter z
[	01011011	133	91	5B	[		opening bracket
\	01011100	134	92	5C	\		backslash
]	01011101	135	93	5D	]		closing bracket
^	01011110	136	94	5E	^		caret – circumflex
_	01011111	137	95	5F	_		underscore
`	01100000	140	96	60	`		grave accent
a	01100001	141	97	61	a		small letter a
b	01100010	142	98	62	b		small letter b
c	01100011	143	99	63	c		small letter c
d	01100100	144	100	64	d		small letter d
e	01100101	145	101	65	e		small letter e
f	01100110	146	102	66	f		small letter f
g	01100111	147	103	67	g		small letter g
h	01101000	150	104	68	h		small letter h
i	01101001	151	105	69	i		small letter i
j	01101010	152	106	6A	j		small letter j
k	01101011	153	107	6B	k		small letter k
l	01101100	154	108	6C	l		small letter l
m	01101101	155	109	6D	m		small letter m
n	01101110	156	110	6E	n		small letter n
o	01101111	157	111	6F	o		small letter o
p	01110000	160	112	70	p		small letter p
q	01110001	161	113	71	q		small letter q
r	01110010	162	114	72	r		small letter r
s	01110011	163	115	73	s		small letter s
t	01110100	164	116	74	t		small letter t
u	01110101	165	117	75	u		small letter u
v	01110110	166	118	76	v		small letter v
w	01110111	167	119	77	w		small letter w
x	01111000	170	120	78	x		small letter x
y	01111001	171	121	79	y		small letter y
z	01111010	172	122	7A	z		small letter z
{	01111011	173	123	7B	{		opening brace
\|	01111100	174	124	7C	\|		vertical bar
}	01111101	175	125	7D	}		closing brace
~	01111110	176	126	7E	~		equivalency sign, tilde
[DEL]	01111111	177	127	7F			delete

Detailed ASCII TABLE [Extended Characters 1]

The term extended ASCII (or high ASCII) describes eight-bit or larger character encodings that include the standard seven-bit ASCII characters as well as others. –Quote from Wikipedia (http://en.wikipedia.org/wiki/Extended_ASCII)

CHAR	BIN	OCT	DEC	HEX	HTML Number	HTML Name	DESCRIPTION
€	10000000	200	128	80		€	euro sign
(n/a)	10000001	201	129	81
‚	10000010	202	130	82		&sbquo;	single low-9 quotation mark
ƒ	10000011	203	131	83		&fnof;	latin small letter f with hook
„	10000100	204	132	84		&bdquo;	double low-9 quotation mark
…	10000101	205	133	85		…	horizontal ellipsis
†	10000110	206	134	86		&dagger;	dagger
‡	10000111	207	135	87		&Dagger;	double dagger
ˆ	10001000	210	136	88		&circ;	modifier letter circumflex accent
‰	10001001	211	137	89		&permil;	per mille sign
Š	10001010	212	138	8A		&Scaron;	latin capital letter s with caron
‹	10001011	213	139	8B		&lsaquo;	single left-pointing angle quotation
Œ	10001100	214	140	8C		&OElig;	latin capital ligature oe
(n/a)	10001101	215	141	8D
Ž	10001110	216	142	8E			latin captial letter z with caron
(n/a)	10001111	217	143	8F
(n/a)	10010000	220	144	90
‘	10010001	221	145	91		‘	left single quotation mark
’	10010010	222	146	92		’	right single quotation mark
“	10010011	223	147	93		“	left double quotation mark
”	10010100	224	148	94		”	right double quotation mark
•	10010101	225	149	95		•	bullet
–	10010110	226	150	96		–	en dash
—	10010111	227	151	97		—	em dash
˜	10011000	230	152	98		&tilde;	small tilde
™	10011001	231	153	99		™	trade mark sign
š	10011010	232	154	9A		&scaron;	latin small letter s with caron
›	10011011	233	155	9B		&rsaquo;	single right-pointing angle quotation mark
œ	10011100	234	156	9C		&oelig;	latin small ligature oe
(n/a)	10011101	235	157	9D
ž	10011110	236	158	9E			latin small letter z with caron
Ÿ	10011111	237	159	9F		ÿ	latin capital letter y with diaeresis
	10100000	240	160	A0			non-breaking space
¡	10100001	241	161	A1	¡	¡	inverted exclamation mark
¢	10100010	242	162	A2	¢	¢	cent sign
£	10100011	243	163	A3	£	£	pound sign
¤	10100100	244	164	A4	¤	¤	currency sign
¥	10100101	245	165	A5	¥	¥	yen sign
¦	10100110	246	166	A6	¦	¦	pipe, broken vertical bar
§	10100111	247	167	A7	§	§	section sign
¨	10101000	250	168	A8	¨	¨	spacing diaeresis – umlaut
©	10101001	251	169	A9	©	©	copyright sign
ª	10101010	252	170	AA	ª	ª	feminine ordinal indicator
«	10101011	253	171	AB	«	«	left double angle quotes
¬	10101100	254	172	AC	¬	¬	not sign
	10101101	255	173	AD			soft hyphen
®	10101110	256	174	AE	®	®	registered trade mark sign
¯	10101111	257	175	AF	¯	¯	spacing macron – overline
°	10110000	260	176	B0	°	°	degree sign
±	10110001	261	177	B1	±	±	plus-or-minus sign
²	10110010	262	178	B2	²	²	superscript two – squared
³	10110011	263	179	B3	³	³	superscript three – cubed
´	10110100	264	180	B4	´	´	acute accent – spacing acute
µ	10110101	265	181	B5	µ	µ	micro sign
¶	10110110	266	182	B6	¶	¶	pilcrow sign – paragraph sign
·	10110111	267	183	B7	·	·	middle dot – georgian comma
¸	10111000	270	184	B8	¸	¸	spacing cedilla
¹	10111001	271	185	B9	¹	¹	superscript one
º	10111010	272	186	BA	º	º	masculine ordinal indicator
»	10111011	273	187	BB	»	»	right double angle quotes
¼	10111100	274	188	BC	¼	¼	fraction one quarter
½	10111101	275	189	BD	½	½	fraction one half
¾	10111110	276	190	BE	¾	¾	fraction three quarters
¿	10111111	277	191	BF	¿	¿	inverted question mark

Detailed ASCII TABLE [Extended Characters 2]

CHAR	BIN	OCT	DEC	HEX	HTML Number	HTML Name	DESCRIPTION
À	11000000	300	192	C0	À	À	latin capital letter a with grave
Á	11000001	301	193	C1	Á	Á	latin capital letter a with acute
Â	11000010	302	194	C2	Â	Â	latin capital letter a with circumflex
Ã	11000011	303	195	C3	Ã	Ã	latin capital letter a with tilde
Ä	11000100	304	196	C4	Ä	Ä	latin capital letter a with diaeresis
Å	11000101	305	197	C5	Å	Å	latin capital letter a with ring above
Æ	11000110	306	198	C6	Æ	Æ	latin capital letter ae
Ç	11000111	307	199	C7	Ç	Ç	latin capital letter c with cedilla
È	11001000	310	200	C8	È	È	latin capital letter e with grave
É	11001001	311	201	C9	É	É	latin capital letter e with acute
Ê	11001010	312	202	CA	Ê	Ê	latin capital letter e with circumflex
Ë	11001011	313	203	CB	Ë	Ë	latin capital letter e with diaeresis
Ì	11001100	314	204	CC	Ì	Ì	latin capital letter i with grave
Í	11001101	315	205	CD	Í	Í	latin capital letter i with acute
Î	11001110	316	206	CE	Î	Î	latin capital letter i with circumflex
Ï	11001111	317	207	CF	Ï	Ï	latin capital letter i with diaeresis
Ð	11010000	320	208	D0	Ð	Ð	latin capital letter eth
Ñ	11010001	321	209	D1	Ñ	Ñ	latin capital letter n with tilde
Ò	11010010	322	210	D2	Ò	Ò	latin capital letter o with grave
Ó	11010011	323	211	D3	Ó	Ó	latin capital letter o with acute
Ô	11010100	324	212	D4	Ô	Ô	latin capital letter o with circumflex
Õ	11010101	325	213	D5	Õ	Õ	latin capital letter o with tilde
Ö	11010110	326	214	D6	Ö	Ö	latin capital letter o with diaeresis
×	11010111	327	215	D7	×	×	multiplication sign
Ø	11011000	330	216	D8	Ø	Ø	latin capital letter o with slash
Ù	11011001	331	217	D9	Ù	Ù	latin capital letter u with grave
Ú	11011010	332	218	DA	Ú	Ú	latin capital letter u with acute
Û	11011011	333	219	DB	Û	Û	latin capital letter u with circumflex
Ü	11011100	334	220	DC	Ü	Ü	latin capital letter u with diaeresis
Ý	11011101	335	221	DD	Ý	Ý	latin capital letter y with acute
Þ	11011110	336	222	DE	Þ	Þ	latin capital letter thorn
ß	11011111	337	223	DF	ß	ß	latin small letter sharp s – ess-zed
à	11100000	340	224	E0	à	à	latin small letter a with grave
á	11100001	341	225	E1	á	á	latin small letter a with acute
â	11100010	342	226	E2	â	â	latin small letter a with circumflex
ã	11100011	343	227	E3	ã	ã	latin small letter a with tilde
ä	11100100	344	228	E4	ä	ä	latin small letter a with diaeresis
å	11100101	345	229	E5	å	å	latin small letter a with ring above
æ	11100110	346	230	E6	æ	æ	latin small letter ae
ç	11100111	347	231	E7	ç	ç	latin small letter c with cedilla
è	11101000	350	232	E8	è	è	latin small letter e with grave
é	11101001	351	233	E9	é	é	latin small letter e with acute
ê	11101010	352	234	EA	ê	ê	latin small letter e with circumflex
ë	11101011	353	235	EB	ë	ë	latin small letter e with diaeresis
ì	11101100	354	236	EC	ì	ì	latin small letter i with grave
í	11101101	355	237	ED	í	í	latin small letter i with acute
î	11101110	356	238	EE	î	î	latin small letter i with circumflex
ï	11101111	357	239	EF	ï	ï	latin small letter i with diaeresis
ð	11110000	360	240	F0	ð	ð	latin small letter eth
ñ	11110001	361	241	F1	ñ	ñ	latin small letter n with tilde
ò	11110010	362	242	F2	ò	ò	latin small letter o with grave
ó	11110011	363	243	F3	ó	ó	latin small letter o with acute
ô	11110100	364	244	F4	ô	ô	latin small letter o with circumflex
õ	11110101	365	245	F5	õ	õ	latin small letter o with tilde
ö	11110110	366	246	F6	ö	ö	latin small letter o with diaeresis
÷	11110111	367	247	F7	÷	÷	division sign
ø	11111000	370	248	F8	ø	ø	latin small letter o with slash
ù	11111001	371	249	F9	ù	ù	latin small letter u with grave
ú	11111010	372	250	FA	ú	ú	latin small letter u with acute
û	11111011	373	251	FB	û	û	latin small letter u with circumflex
ü	11111100	374	252	FC	ü	ü	latin small letter u with diaeresis
ý	11111101	375	253	FD	ý	ý	latin small letter y with acute
þ	11111110	376	254	FE	þ	þ	latin small letter thorn
ÿ	11111111	377	255	FF	ÿ	ÿ	latin small letter y with diaeresis