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# ASCII 码表
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| 十进制 | 十六进制 | 字符 | 描述 |
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|--------|----------|-------|--------------------|
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| 0 | 0x00 | NUL | 空字符 |
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| 1 | 0x01 | SOH | 标题开始 |
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| 2 | 0x02 | STX | 文本开始 |
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| 3 | 0x03 | ETX | 文本结束 |
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| 4 | 0x04 | EOT | 传输结束 |
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| 5 | 0x05 | ENQ | 询问字符 |
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| 6 | 0x06 | ACK | 确认字符 |
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| 7 | 0x07 | BEL | 响铃 |
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| 8 | 0x08 | BS | 退格 |
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| 9 | 0x09 | HT | 水平制表符 |
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| 10 | 0x0A | LF | 换行 |
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| 11 | 0x0B | VT | 垂直制表符 |
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| 12 | 0x0C | FF | 换页 |
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| 13 | 0x0D | CR | 回车 |
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| 14 | 0x0E | SO | 取消移位 |
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| 15 | 0x0F | SI | 启用移位 |
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| 16 | 0x10 | DLE | 数据链路转义 |
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| 17 | 0x11 | DC1 | 设备控制1（XON） |
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| 18 | 0x12 | DC2 | 设备控制2 |
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| 19 | 0x13 | DC3 | 设备控制3（XOFF） |
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| 20 | 0x14 | DC4 | 设备控制4 |
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| 21 | 0x15 | NAK | 否定确认 |
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| 22 | 0x16 | SYN | 同步空闲 |
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| 23 | 0x17 | ETB | 传输块结束 |
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| 24 | 0x18 | CAN | 取消 |
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| 25 | 0x19 | EM | 介质结束 |
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| 26 | 0x1A | SUB | 替换 |
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| 27 | 0x1B | ESC | 退出 |
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| 28 | 0x1C | FS | 文件分隔符 |
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| 29 | 0x1D | GS | 组分隔符 |
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| 30 | 0x1E | RS | 记录分隔符 |
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| 31 | 0x1F | US | 单元分隔符 |
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| 32 | 0x20 | SP | 空格 |
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| 33 | 0x21 | ! | 感叹号 |
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| 34 | 0x22 | " | 双引号 |
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| 35 | 0x23 | # | 数字符号 |
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| 36 | 0x24 | $ | 美元符号 |
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| 37 | 0x25 | % | 百分号 |
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| 38 | 0x26 | & | 和符号 |
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| 39 | 0x27 | ' | 单引号 |
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| 40 | 0x28 | ( | 左括号 |
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| 41 | 0x29 | ) | 右括号 |
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| 42 | 0x2A | * | 星号 |
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| 43 | 0x2B | + | 加号 |
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| 44 | 0x2C | , | 逗号 |
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| 45 | 0x2D | - | 减号/横线 |
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| 46 | 0x2E | . | 句点 |
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| 47 | 0x2F | / | 斜杠 |
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| 48 | 0x30 | 0 | 数字0 |
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| 49 | 0x31 | 1 | 数字1 |
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| 50 | 0x32 | 2 | 数字2 |
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| 51 | 0x33 | 3 | 数字3 |
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| 52 | 0x34 | 4 | 数字4 |
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| 53 | 0x35 | 5 | 数字5 |
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| 54 | 0x36 | 6 | 数字6 |
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| 55 | 0x37 | 7 | 数字7 |
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| 56 | 0x38 | 8 | 数字8 |
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| 57 | 0x39 | 9 | 数字9 |
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| 58 | 0x3A | : | 冒号 |
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| 59 | 0x3B | ; | 分号 |
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| 60 | 0x3C | < | 小于号 |
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| 61 | 0x3D | = | 等号 |
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| 62 | 0x3E | > | 大于号 |
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| 63 | 0x3F | ? | 问号 |
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| 64 | 0x40 | @ | 商业符号 |
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| 65 | 0x41 | A | 大写字母A |
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| 66 | 0x42 | B | 大写字母B |
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| 67 | 0x43 | C | 大写字母C |
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| 68 | 0x44 | D | 大写字母D |
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| 69 | 0x45 | E | 大写字母E |
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| 70 | 0x46 | F | 大写字母F |
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| 71 | 0x47 | G | 大写字母G |
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| 72 | 0x48 | H | 大写字母H |
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| 73 | 0x49 | I | 大写字母I |
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| 74 | 0x4A | J | 大写字母J |
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| 75 | 0x4B | K | 大写字母K |
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| 76 | 0x4C | L | 大写字母L |
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| 77 | 0x4D | M | 大写字母M |
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| 78 | 0x4E | N | 大写字母N |
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| 79 | 0x4F | O | 大写字母O |
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| 80 | 0x50 | P | 大写字母P |
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| 81 | 0x51 | Q | 大写字母Q |
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| 82 | 0x52 | R | 大写字母R |
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| 83 | 0x53 | S | 大写字母S |
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| 84 | 0x54 | T | 大写字母T |
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| 85 | 0x55 | U | 大写字母U |
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| 86 | 0x56 | V | 大写字母V |
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| 87 | 0x57 | W | 大写字母W |
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| 88 | 0x58 | X | 大写字母X |
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| 89 | 0x59 | Y | 大写字母Y |
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| 90 | 0x5A | Z | 大写字母Z |
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| 91 | 0x5B | [ | 左方括号 |
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| 92 | 0x5C | \ | 反斜杠 |
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| 93 | 0x5D | ] | 右方括号 |
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| 94 | 0x5E | ^ | 脱字符 |
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| 95 | 0x5F | _ | 下划线 |
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| 96 | 0x60 | ` | 反引号 |
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| 97 | 0x61 | a | 小写字母a |
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| 98 | 0x62 | b | 小写字母b |
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| 99 | 0x63 | c | 小写字母c |
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| 100 | 0x64 | d | 小写字母d |
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| 101 | 0x65 | e | 小写字母e |
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| 102 | 0x66 | f | 小写字母f |
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| 103 | 0x67 | g | 小写字母g |
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| 104 | 0x68 | h | 小写字母h |
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| 105 | 0x69 | i | 小写字母i |
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| 106 | 0x6A | j | 小写字母j |
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| 107 | 0x6B | k | 小写字母k |
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| 108 | 0x6C | l | 小写字母l |
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| 109 | 0x6D | m | 小写字母m |
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| 110 | 0x6E | n | 小写字母n |
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| 111 | 0x6F | o | 小写字母o |
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| 112 | 0x70 | p | 小写字母p |
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| 113 | 0x71 | q | 小写字母q |
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| 114 | 0x72 | r | 小写字母r |
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| 115 | 0x73 | s | 小写字母s |
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| 116 | 0x74 | t | 小写字母t |
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| 117 | 0x75 | u | 小写字母u |
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| 118 | 0x76 | v | 小写字母v |
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| 119 | 0x77 | w | 小写字母w |
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| 120 | 0x78 | x | 小写字母x |
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| 121 | 0x79 | y | 小写字母y |
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| 122 | 0x7A | z | 小写字母z |
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| 123 | 0x7B | { | 左花括号 |
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| 124 | 0x7C | \| | 竖线 |
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| 125 | 0x7D | } | 右花括号 |
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| 126 | 0x7E | ~ | 波浪号 |
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| 127 | 0x7F | DEL | 删除 |
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