ASCII代表美国信息交换标准码.有128个标准ASCII代码，每个代码都可以用7位二进制数表示:0000000到1111111.
扩展ASCII增加了128个字符，这些字符在计算机，程序和字体.
7位ASCII码
| DEC | OCT | HEX | BIN | 符号 | HTML代码 | 描述 |
|---|---|---|---|---|---|---|
| 0 | 000 | 00 | 00000000 | NUL | &＃000; | Null char |
| 1 | 001 | 01 | 00000001 | SOH | &＃001; | 标题的开头 |
| 2 | 002 | 02 | 00000010 | STX | &＃002; | 文本开头 |
| 3 | 003 | 03 | 00000011 | ETX | &＃003; | 文字结尾 |
| 4 | 004 | 04 | 00000100 | EOT | &＃004; | 传输结束 |
| 5 | 005 | 05 | 00000101 | ENQ | &＃005; | 查询 |
| 6 | 006 | 06 | 00000110 | ACK | &＃006; | 确认 |
| 7 | 007 | 07 | 00000111 | BEL | &＃007; | 贝尔 |
| 8 | 010 | 08 | 00001000 | BS | &＃008; | Back Space |
| 9 | 011 | 09 | 00001001 | HT | &＃009; | 水平标签 |
| 10 | 012 | 0A | 00001010 | LF | &＃010; | 换行 |
| 11 | 013 | 0B | 00001011 | VT | &＃011; | 垂直标签 |
| 12 | 014 | 0C | 00001100 | FF | &＃012; | 表格Feed |
| 13 | 015 | 0D | 00001101 | CR | &＃013; | 回程 |
| 14 | 016 | 0E | 00001110 | SO | &＃014; | Shift Out/X-On |
| 15 | 017 | 0F | 00001111 | SI | &＃015; | Shift In/X-Off |
| 16 | 020 | 10 | 00010000 | DLE | &＃016; | 数据线逃生 |
| 17 | 021 | 11 | 00010001 | DC1 | &＃017; | 设备控制1(经常. XON) |
| 18 | 022 | 12 | 00010010 | DC2 | &＃018; | 设备控制2 |
| 19 | 023 | 13 | 00010011 | DC3 | &＃019; | 设备控制3(经常为XOFF) |
| 20 | 024 | 14 | 00010100 | DC4 | &＃020; | 设备控制4 |
| 21 | 025 | 15 | 00010101 | NAK | &＃021; | 否定确认 |
| 22 | 026 | 16 | 00010110 | SYN | &＃022; | Synchronous Idle |
| 23 | 027 | 17 | 00010111 | ETB | &＃023; | 传输阻止结束 |
| 24 | 030 | 18 | 00011000 | CAN | &＃024; | 取消 |
| 25 | 031 | 19 | 00011001 | EM | &＃025; | 中等结束 |
| 26 | 032 | 1A | 00011010 | SUB | &＃026; | 替换 |
| 27 | 033 | 1B | 00011011 | ESC | &＃027; | Escape |
| 28 | 034 | 1C | 00011100 | FS | &＃028; | 文件分隔符 |
| 29 | 035 | 1D | 00011101 | GS | &＃ 029; | 组分隔符 |
| 30 | 036 | 1E | 00011110 | RS | &＃030; | 记录分隔符 |
| 31 | 037 | 1F | 00011111 | US | &＃031; | 单位分隔符 |
| 32 | 040 | 20 | 00100000 | &＃32; | 空格 | |
| 33 | 041 | 21 | 00100001 | ！ | &＃33; | 感叹号 |
| 34 | 042 | 22 | 00100010 | " | &＃34; | 双引号 |
| 35 | 043 | 23 | 00100011 | ＃ | &＃35; | 数字 |
| 36 | 044 | 24 | 00100100 | $ | &＃36 ; | 美元 |
| 37 | 045 | 25 | 00100101 | ％ | & ;＃37; | Procenttecken |
| 38 | 046 | 26 | 00100110 | & | &＃38; | Ampersand |
| 39 | 047 | 27 | 00100111 | ' | &＃39; | 单引号 |
| 40 | 050 | 28 | 00101000 | ( | &＃40; | 打开括号 |
| 41 | 051 | 29 | 00101001 | ) | &＃41; | 关闭parenth esis |
| 42 | 052 | 2A | 00101010 | * | &＃42; | Asterisk |
| 43 | 053 | 2B | 00101011 | + | &＃43; | 加上 |
| 44 | 054 | 2C | 00101100 | ， | &＃44; | 逗号 |
| 45 | 055 | 2D | 00101101 | - | &＃ 45; | 连字符 |
| 46 | 056 | 2E | 00101110 | . | &＃46; | 期间，点数或句号 |
| 47 | 057 | 2F | 00101111 | / | &＃47; | 斜杠或除法 |
| 48 | 060 | 30 | 00110000 | 0 | &＃48; | 零 |
| 49 | 061 | 31 | 00110001 | 1 | &＃49; | 一个 |
| 50 | 062 | 32 | 00110010 | 2 | &＃50; | 两个 |
| 51 | 063 | 33 | 00110011 | 3 | &＃51; | 三 |
| 52 | 064 | 34 | 00110100 | 4 | &＃52; | Four |
| 53 | 065 | 35 | 00110101 | 5 | &＃53; | 五 |
| 54 | 066 | 36 | 001101 10 | 6 | &＃54; | 六 |
| 55 | 067 | 37 | 00110111 | 7 | &＃55; | 七 |
| 56 | 070 | 38 | 00111000 | 8 | &＃56; | 八 |
| 57 | 071 | 39 | 00111001 | 9 | &＃57; | Nine |
| 58 | 072 | 3A | 00111010 | : | &＃58; | Colon |
| 59 | 073 | 3B | 00111011 | ; | &＃59; | 分号 |
| 60 | 074 | 3C | 00111100 | < | &＃60; | Les比 |
| 61 | 075 | 3D | 00111101 | = | &＃61; | 等于 |
| 62 | 076 | 3E | 00111110 | > | &＃62; | 大于 |
| 63 | 077 | 3F | 00111111 | ？ | &＃63 ; | 问号 |
| 64 | 100 | 40 | 01000000 | @ | &＃64; | 符号 |
| 65 | 101 | 41 | 01000001 | A | &＃65; | 大写字母A |
| 66 | 102 | 42 | 01000010 | B | &＃66; | 大写字母B |
| 67 | 103 | 43 | 01000011 | C | &＃67; | 大写字母C |
| 68 | 104 | 44 | 01000100 | D | &＃68; | 大写字母D |
| 69 | 105 | 45 | 01000101 | E | &＃69; | 大写字母E |
| 70 | 106 | 46 | 01000110 | F | &＃70; | 大写字母F |
| 71 | 107 | 47 | 01000111 | G | &＃71; | 大写字母G |
| 72 | 110 | 48 | 01001000 | H | &＃72; | 大写字母H |
| 73 | 49 | 01001001 | I | &＃73; | 大写I | |
| 74 | 112 | 4A | 01001010 | J | &＃74; | 大写字母J |
| 75 | 113 | 4B | 01001011 | K | &＃75; | 大写字母K |
| 76 | 114 | 4C | 01001100 | L | &＃76; | 大写字母L |
| 77 | 115 | 4D | 01001101 | M | &＃77; | 大写字母M |
| 78 | 116 | 4E | 01001110 | N | &＃78; | 大写字母N |
| 79 | 117 | 4F | 01001111 | O | &＃79; | 大写字母O |
| 80 | 120 | 50 | 01010000 | P | &＃80; | 大写P |
| 81 | 121 | 51 | 01010001 | Q | &＃81; | 大写Q |
| 82 | 122 | 52 | 01010010 | R | &＃82; | 大写R |
| 83 | 123 | 53 | 01010011 | S | &＃ 83; | 大写字母S |
| 84 | 124 | 54 | 01010100 | T | &＃84; | 大写T |
| 85 | 125 | 55 | 01010101 | U | &＃85; | 大写字母U |
| 86 | 126 | 56 | 01010110 | V | &＃86; | 大写字母V |
| 87 | 127 | 57 | 01010111 | W | &＃87; | 大写W |
| 88 | 130 | 58 | 01011000 | X | &＃88; | 大写字母X |
| 89 | 131 | 59 | 01011001 | Y | &＃89; | 大写字母Y |
| 90 | 132 | 5A | 01011010 | Z | &＃90; | 大写Z |
| 91 | 133 | 5B | 01011011 | [ | &＃91 ; | 开始括号 |
| 92 | 134 | 5C | 01011100 | \ | &＃92; | 反斜杠 |
| 93 | 135 | 5D | 01011101 | ] | &＃93; | 结束括号 |
| 94 | 136 | 5E | 01011110 | ^ | &＃94; | Caret - circumflex |
| 95 | 137 | 5F | 01011111 | _ | &＃95; | 下划线 |
| 96 | 140 | 60 | 01100000 | ` | &＃96; | Grave accent |
| 97 | 141 | 61 | 01100001 | a | & #97; | 小写a |
| 98 | 142 | 62 | 01100010 | b | &＃98; | 小写字母b |
| 99 | 143 | 63 | 01100011 | c | &＃99 ; | 小写c |
| 100 | 144 | 64 | 01100100 | d | &＃100; | 小写d |
| 101 | 145 | 65 | 01100101 | e | &＃101; | 小写e |
| 102 | 146 | 66 | 01100110 | f | &＃102; | 小写f |
| 103 | 147 | 67 | 01100111 | g | &＃103; | 小写g |
| 104 | 150 | 68 | 01101000 | h | &＃104; | 小写h |
| 105 | 151 | 69 | 01101001 | i | &＃105; | 小写i |
| 106 | 152 | 6A | 01101010 | j | &＃106; | 小写j |
| 107 | 153 | 6B | 01101011 | k | &＃107 ; | 小写k |
| 108 | 154 | 6C | 01101100 | l | &＃108; | 小写l |
| 109 | 155 | 6D | 01101101 | m | &＃109; | 小写m |
| 110 | 156 | 6E | 01101110 | n | &＃110; | 小写字母n |
| 111 | 157 | 6F | 01101111 | o | &＃111; | 小写o |
| 112 | 160 | 70 | 01110000 | p | &＃112; | 小写p |
| 113 | 161 | 71 | 01110001 | q | &＃113; | 小写q |
| 114 | 162 | 72 | 01110010 | r | &＃114; | 小写r |
| 115 | 163 | 73 | 01110011 | s | &＃115; | 小写s |
| 116 | 164 | 74 | 01110100 | t | &＃116; | 小写t |
| 117 | 165 | 75 | 01110101 | u | &＃117; | 小写u |
| 118 | 166 | 76 | 01110110 | v | &＃118; | 小写v |
| 119 | 167 | 77 | 01110111 | w | &＃119; | 小写w |
| 120 | 170 | 78 | 01111000 | x | &＃120; | 小写x |
| 121 | 171 | 79 | 01111001 | y | &＃121; | 小写y |
| 122 | 172 | 7A | 01111010 | z | &＃122; | 小写字母z |
| 123 | 173 | 7B | 01111011 | { | &＃123; | 开幕大括号 |
| 124 | 174 | 7C | 01111100 | | | &＃124; | 垂直条 |
| 125 | 175 | 7D | 01111101 | } | &＃125; | 关闭大括号 |
| 126 | 176 | 7E | 01111110 | 〜 | &＃126; | 等价符号(代字号) |
| 127 | 177 | 7F | 01111111 | &＃127; | 删除 |
扩展ASCII代码
下面是根据ISO 8859-1的额外128个扩展ASCII代码集，也称为ISO Latin-1.
$b$ b$ b$b$b $b$ b$b$ b$b$b$ b
| DEC | OCT | HEX | BIN | 符号 | HTMLCode | 描述 |
|---|---|---|---|---|---|---|
| 128 | 200 | 80 | 10000000 | € | &＃128; | 欧元符号 |
| 129 | 201 | 81 | 10000001 | |||
| 130 | 202 | 82 | 10000010 | ， | &＃130; | 单个低9引号 |
| 131 | 203 | 83 | 10000011 | ƒ | &＃131; | 带挂钩的拉丁小写字母f |
| 132 | 204 | 84 | 10000100 | " | &＃132; | Double low-9 quotign mark |
| 133 | 205 | 85 | 10000101 | ... | &＃133; | 水平省略号 |
| 134 | 206 | 86 | 10000110 | † | &＃134; | Dagger |
| 135 | 207 | 87 | 10000111 | ‡ | &＃135; | Double dagger |
| 136 | 210 | 88 | 10001000 | &＃136; | 修饰符字母抑扬音 | |
| 137 | 211 | 89 | 10001001 | ‰ | &＃137; | 每个号码 |
| 138 | 212 | 8A | 10001010 | Š | &＃138; | 拉丁大写字母S与caron |
| 139 | 213 | 8B | 10001011 | < | &＃139; | 单个左指角度报价 |
| 140 | 214 | 8C | 10001100 | Œ | &＃140; | 拉丁语资本结合OE |
| 141 | 215 | 8D | 10001101 | |||
| 142 | 216 | 8E | 10001110 | Ž | &＃142; | Latin ca带卡通的重要字母Z |
| 143 | 217 | 8F | 10001111 | |||
| 144 | 220 | 90 | 10010000 | |||
| 145 | 221 | 91 | 10010001 | ' | &＃145; | 左单引号 |
| 146 | 222 | 92 | 10010010 | ' | &＃146; | 右单引号 |
| 147 | 223 | 93 | 10010011 | " | &＃147; | 左双引号 |
| 148 | 224 | 94 | 10010100 | " | &＃148; | 右双引号 |
| 149 | 225 | 95 | 10010101 | • | &＃149; | Bullet |
| 150 | 226 | 96 | 10010110 | - | &＃150; | En dash |
| 151 | 227 | 97 | 10010111 | - | &＃151; | Em dash |
| 152 | 230 | 98 | 10011000 | 〜 | &＃152; | Small tilde |
| 153 | 231 | 99 | 10011001 | ™ | &＃153; | 商标标志 |
| 154 | 232 | 9A | 10011010 | š | &＃154; | 带卡通的拉丁小写字母S |
| 155 | 233 | 9B | 10011011 | > | &＃155; | 单向右角度引号 |
| 156 | 234 | 9C | 10011100 | - | &＃156; | 拉丁文小结扎oe |
| 157 | 235 | 9D | 10011101 | |||
| 158 | 236 | 9E | 10011110 | ž | &＃158; | 带卡通的拉丁小写字母 |
| 159 | 237 | 9F | 10011111 | Ÿ | &＃ 159; | 带有分音符的拉丁大写字母Y |
| 160 | 240 | A0 | 10100000 | &＃160; | 不间断的空间 | |
| 161 | 241 | A1 | 10100001 | ¡ | &＃161; | 倒置感叹号 |
| 162 | 242 | A2 | 10100010 | ¢ | &＃162; | 分号 |
| 163 | 243 | A3 | 10100011 | £ | &＃163; | 英镑符号 |
| 164 | 244 | A4 | 10100100 | ¤ | &＃164 ; | 货币符号 |
| 165 | 245 | A5 | 10100101 | ¥ | &＃165; | 日元符号 |
| 166 | 246 | A6 | 10100110 | | | &＃166; | 管道，折断竖条 |
| 167 | 247 | A7 | 10100111 | § | &＃167; | 部分标志 |
| 168 | 250 | A8 | 10101000 | ¨ | &＃168; | Spacing diaeresis - umlaut |
| 169 | 251 | A9 | 10101001 | © | &＃169; | 版权符号 |
| 170 | 252 | AA | 10101010 | ª | &＃170; | 女性序数指标 |
| 171 | 253 | AB | 10101011 | « | & amp;＃171; | 左双角报价 |
| 172 | 254 | AC | 10101100 | ¬ | &＃172; | 未签名 |
| 173 | 255 | AD | 10101101 | &＃173; | 软连字符 | |
| 174 | 256 | AE | 10101110 | ® | &＃174; | 注册商标标志 |
| 175 | 257 | AF | 10101111 | ¯ | &＃175; | 间距macron - overline |
| 176 | 260 | B0 | 10110000 | ° | &＃176; | 学位标志 |
| 177 | 261 | B1 | 10110001 | ± | &＃177; | 加号或减号 |
| 178 | 262 | B2 | 10110010 | ² | ² | Superscript two - squared |
| 179 | 263 | B3 | 10110011 | ³ | ³ | Superscript three - cubed |
| 180 | 264 | B4 | 10110100 | ´ | ´ | Acute accent - spacing acute |
| 181 | 265 | B5 | 10110101 | µ | &# 181; | Micro sign |
| 182 | 266 | B6 | 10110110 | ¶ | ¶ | Pilcrow sign - paragraph sign |
| 183 | 267 | B7 | 10110111 | · | · | Middle dot - Georgian comma |
| 184 | 270 | B8 | 10111000 | ¸ | ¸ | Spacing cedilla |
| 185 | 271 | B9 | 10111001 | ¹ | ¹ | Superscript one |
| 186 | 272 | BA | 10111010 | º | º | Masculine ordinal indicator |
| 187 | 273 | BB | 10111011 | » | » | Right double angle quotes |
| 188 | 274 | BC | 10111100 | ¼ | ¼ | Fraction one quarter |
| 189 | 275 | BD | 10111101 | ½ | ½ | Fraction one half |
| 190 | 276 | BE | 10111110 | ¾ | ¾ | Fraction three quarters |
| 191 | 277 | BF | 10111111 | ¿ | ¿ | Inverted question mark |
| 192 | 300 | C0 | 11000000 | À | À | Latin capital letter A with grave |
| 193 | 301 | C1 | 11000001 | Á | Á | Latin capital letter A with acute |
| 194 | 302 | C2 | 11 000010 | Â | Â | Latin capital letter A with circumflex |
| 195 | 303 | C3 | 11000011 | Ã | Ã | Latin capital letter A with tilde |
| 196 | 304 | C4 | 11000100 | Ä | Ä | Latin capital letter A with diaeresis |
| 197 | 305 | C5 | 11000101 | Å | Å | Latin capital letter A with ring above |
| 198 | 306 | C6 | 11000110 | Æ | Æ | Latin capital letter AE |
| 199 | 307 | C7 | 11000111 | Ç | Ç | |
| 200 | 310 | C8 | 11001000 | È | È | Latin capital letter E with grave |
| 201 | 311 | C9 | 11001001 | É | É | Latin capital letter E with acute |
| 202 | 312 | CA | 11001010 | Ê | Ê | Latin capital letter E with circumflex |
| 203 | 313 | CB | 11001011 | Ë | Ë | Latin capital letter E with diaeresis |
| 204 | 314 | CC | 11001100 | Ì | Ì | Latin capital letter I with grave |
| 205 | 315 | CD | 11001101 | Í | Í | Latin capital letter I with acute |
| 206 | 316 | CE | 11001110 | Î | Î | Latin capital letter I with circumflex |
| 207 | 317 | CF | 11001111 | Ï | Ï | Latin capital letter I with diaeresis |
| 208 | 320 | D0 | 11010000 | Ð | Ð | Latin capital letter ETH |
| 209 | 321 | D1 | 11010001 | Ñ | Ñ | Latin capital letter N with tilde |
| 210 | 322 | D2 | 11010010 | Ò | Ò | Latin capital letter O with grave |
| 211 | 323 | D3 | 11010011 | Ó | Ó | Latin capital letter O with acute |
| 212 | 324 | D4 | 11010100 | Ô | Ô | Latin capital letter O with circumflex |
| 213 | 325 | D5 | 11010101 | Õ | Õ | Latin capital letter O with tilde |
| 214 | 326 | D6 | 11010110 | Ö | Ö | Latin capital letter O with diaeresis |
| 215 | 327 | D7 | 11010111 | × | × | Multiplication sign |
| 216 | 330 | D8 | 11011000 | Ø | Ø | Latin capital letter O with slash |
| 217 | 331 | D9 | 11011001 | Ù | Ù | Latin capital letter U with grave |
| 218 | 332 | DA | 11011010 | Ú | Ú | Latin capital letter U with acute |
| 219 | 333 | DB | 11011011 | Û | Û | Latin capital letter U with circumflex |
| 220 | 334 | DC | 11011100 | Ü | Ü | Latin capital letter U with diaeresis |
| 221 | 335 | DD | 11011101 | Ý | Ý | Latin capital letter Y with acute |
| 222 | 336 | DE | 11011110 | Þ | Þ | Latin capital letter THORN |
| 223 | 337 | DF | 11011111 | ß | ß | Latin small letter sharp s - ess-zed |
| 224 | 340 | E0 | 11100000 | à | à | Latin small letter a with grave |
| 225 | 341 | E1 | 11100001 | á | á | Latin small letter a with acute |
| 226 | 342 | E2 | 1110001 0 | â | â | Latin small letter a with circumflex |
| 227 | 343 | E3 | 11100011 | ã | ã | Latin small letter a with tilde |
| 228 | 344 | E4 | 11100100 | ä | ä | Latin small letter a with diaeresis |
| 229 | 345 | E5 | 11100101 | å | å | Latin small letter a with ring above |
| 230 | 346 | E6 | 11100110 | æ | æ | Latin small letter ae |
| 231 | 347 | E7 | 11100111 | ç | ç | Latin small l etter c with cedilla |
| 232 | 350 | E8 | 11101000 | è | è | Latin small letter e with grave |
| 233 | 351 | E9 | 11101001 | é | é | Latin small letter e with acute |
| 234 | 352 | EA | 11101010 | ê | ê | Latin small letter e with circumflex |
| 235 | 353 | EB | 11101011 | ë | ë | Latin small letter e with diaeresis |
| 236 | 354 | EC | 11101100 | ì | ì | Latin small letter i with grave |
| 237 | 355 | ED | 11101101 | í | í | Latin small letter i with acute |
| 238 | 356 | EE | 11101110 | î | î | Latin small letter i with circumflex |
| 239 | 357 | EF | 11101111 | ï | ï | Latin small letter i with diaeresis |
| 240 | 360 | F0 | 11110000 | ð | ð | Latin small letter eth |
| 241 | 361 | F1 | 11110001 | ñ | ñ | Latin small letter n with tilde |
| 242 | 362 | F2 | 11110010 | ò | ò | Latin small letter o with grave |
| 243 | 363 | F3 | 11110011 | ó | ó | Latin small letter o with acute |
| 244 | 364 | F4 | 11110100 | ô | ô | Latin small letter o with circumflex |
| 245 | 365 | F5 | 11110101 | õ | õ | Latin small letter o with tilde |
| 246 | 366 | F6 | 11110110 | ö | ö | Latin small letter o with diaeresis |
| 247 | 367 | F7 | 11110111 | ÷ | ÷ | Division sign |
| 248 | 370 | F8 | 11111000 | ø | ø | Latin small letter o with slash |
| 249 | 371 | F9 | 11111001 | ù | ù | Latin small letter u with grave |
| 250 | 372 | FA | 11111010 | ú | ú | Latin small letter u with acute |
| 251 | 373 | FB | 11111011 | û | û | Latin small letter u with circumflex |
| 252 | 374 | FC | 11111100 | ü | ü | Latin small letter u with diaeresis |
| 253 | 375 | FD | 11111101 | ý | ý | Latin small letter y with acute |
| 254 | 376 | FE | 11111110 | þ | þ | Latin small letter thorn |
| 255 | 377 | FF | 11111111 | ÿ | ÿ | Latin small letter y with diaeresis |