rodiyer.idv.tw 拉里拉雜
ASCII碼的取值範圍是0~127，共定義了128個字元，可以用7個bit表示，其中33個字元無法顯示，由於ASCII碼並沒有規定編號第128~255的字元，為了能表示更多字元，各廠商制定了很多種ASCII碼的擴展規範，雖然通常把這些規範稱為擴展ASCII碼（Extended ASCII），但其實它們並不屬於正式ASCII碼標準。
以下是常見ASCII碼對應字元符號及說明表：
rodiyer.idv.tw 拉里拉雜
以下是常見ASCII碼對應字元符號及說明表：
| 序號 | CRAR | 顯示 | 說明 |
| 0 | Chr(0) | Null, Null character | |
| 1 | Chr(1) | Start of heading, = console interrupt | |
| 2 | Chr(2) | Start of text, maintenance mode on HP console | |
| 3 | Chr(3) | End of text | |
| 4 | Chr(4) | End of transmission, not the same as ETB | |
| 5 | Chr(5) | Enquiry, goes with ACK; old HP flow control | |
| 6 | Chr(6) | Acknowledge, clears ENQ logon hand | |
| 7 | Chr(7) | Bell, rings the bell... | |
| 8 | Chr(8) | 退格, Backspace, works on HP terminals/computers | |
| 9 | Chr(9) | Tab, tab Horizontal tab, move to next tab stop | |
| 10 | Chr(10) | 換行, Line Feed CHR(10) | |
| 11 | Chr(11) | Vertical tab | |
| 12 | Chr(12) | 換頁, Form Feed, page eject | |
| 13 | Chr(13) | Enter, [Enter] Carriage Return CHR(13) | |
| 14 | Chr(14) | Shift Out, alternate character set | |
| 15 | Chr(15) | Shift In, resume defaultn character set | |
| 16 | Chr(16) | Data link escape | |
| 17 | Chr(17) | XON, with XOFF to pause listings; okay to send | |
| 18 | Chr(18) | Device control 2, block-mode flow control | |
| 19 | Chr(19) | XOFF, with XON is TERM=18 flow control | |
| 20 | Chr(20) | Device control 4 | |
| 21 | Chr(21) | Negative acknowledge | |
| 22 | Chr(22) | 粘貼, Synchronous idle | |
| 23 | Chr(23) | End transmission block, not the same as EOT | |
| 24 | Chr(24) | Cancel line, MPE echoes !!! | |
| 25 | Chr(25) | End of medium, Control-Y interrupt | |
| 26 | Chr(26) | 撤銷, Substitute | |
| 27 | Chr(27) | Esc, Escape, next character is not echoed | |
| 28 | Chr(28) | 文件分隔符號, File separator | |
| 29 | Chr(29) | 分組符, Group separator | |
| 30 | Chr(30) | 記錄分離符號, Record separator, block-mode terminator | |
| 31 | Chr(31) | 單元分隔符號, Unit separator | |
| 32 | Chr(32) | 空格, Space | |
| 33 | Chr(33) | ! | Exclamation mark |
| 34 | Chr(34) | " | Quotation mark ( " in HTML) |
| 35 | Chr(35) | # | Cross hatch (number sign) |
| 36 | Chr(36) | $ | Dollar sign |
| 37 | Chr(37) | % | Percent sign |
| 38 | Chr(38) | & | Ampersand |
| 39 | Chr(39) | ' | Closing single quote (apostrophe) |
| 40 | Chr(40) | ( | Opening parentheses |
| 41 | Chr(41) | ) | Closing parentheses |
| 42 | Chr(42) | * | Asterisk (star, multiply) |
| 43 | Chr(43) | + | Plus |
| 44 | Chr(44) | , | Comma |
| 45 | Chr(45) | - | Hyphen, dash, minus |
| 46 | Chr(46) | . | Period |
| 47 | Chr(47) | / | Slant (forward slash, divide) |
| 48 | Chr(48) | 0 | Zero |
| 49 | Chr(49) | 1 | One |
| 50 | Chr(50) | 2 | Two |
| 51 | Chr(51) | 3 | Three |
| 52 | Chr(52) | 4 | Four |
| 53 | Chr(53) | 5 | Five |
| 54 | Chr(54) | 6 | Six |
| 55 | Chr(55) | 7 | Seven |
| 56 | Chr(56) | 8 | Eight |
| 57 | Chr(57) | 9 | Nine |
| 58 | Chr(58) | : | Colon |
| 59 | Chr(59) | ; | Semicolon |
| 60 | Chr(60) | < | Less than sign (< in HTML) |
| 61 | Chr(61) | = | Equals sign |
| 62 | Chr(62) | > | Greater than sign (> in HTML) |
| 63 | Chr(63) | ? | Question mark |
| 64 | Chr(64) | @ | At-sign |
| 65 | Chr(65) | A | Uppercase A |
| 66 | Chr(66) | B | Uppercase B |
| 67 | Chr(67) | C | Uppercase C |
| 68 | Chr(68) | D | Uppercase D |
| 69 | Chr(69) | E | Uppercase E |
| 70 | Chr(70) | F | Uppercase F |
| 71 | Chr(71) | G | Uppercase G |
| 72 | Chr(72) | H | Uppercase H |
| 73 | Chr(73) | I | Uppercase I |
| 74 | Chr(74) | J | Uppercase J |
| 75 | Chr(75) | K | Uppercase K |
| 76 | Chr(76) | L | Uppercase L |
| 77 | Chr(77) | M | Uppercase M |
| 78 | Chr(78) | N | Uppercase N |
| 79 | Chr(79) | O | Uppercase O |
| 80 | Chr(80) | P | Uppercase P |
| 81 | Chr(81) | Q | Uppercase Q |
| 82 | Chr(82) | R | Uppercase R |
| 83 | Chr(83) | S | Uppercase S |
| 84 | Chr(84) | T | Uppercase T |
| 85 | Chr(85) | U | Uppercase U |
| 86 | Chr(86) | V | Uppercase V |
| 87 | Chr(87) | W | Uppercase W |
| 88 | Chr(88) | X | Uppercase X |
| 89 | Chr(89) | Y | Uppercase Y |
| 90 | Chr(90) | Z | Uppercase Z |
| 91 | Chr(91) | [ | Opening square bracket |
| 92 | Chr(92) | \ | Reverse slant (Backslash) |
| 93 | Chr(93) | ] | Closing square bracket |
| 94 | Chr(94) | ^ | Caret (Circumflex) |
| 95 | Chr(95) | _ | Underscore |
| 96 | Chr(96) | ` | Opening single quote |
| 97 | Chr(97) | a | Lowercase a |
| 98 | Chr(98) | b | Lowercase b |
| 99 | Chr(99) | c | Lowercase c |
| 100 | Chr(100) | d | Lowercase d |
| 101 | Chr(101) | e | Lowercase e |
| 102 | Chr(102) | f | Lowercase f |
| 103 | Chr(103) | g | Lowercase g |
| 104 | Chr(104) | h | Lowercase h |
| 105 | Chr(105) | i | Lowercase i |
| 106 | Chr(106) | j | Lowercase j |
| 107 | Chr(107) | k | Lowercase k |
| 108 | Chr(108) | l | Lowercase l |
| 109 | Chr(109) | m | Lowercase m |
| 110 | Chr(110) | n | Lowercase n |
| 111 | Chr(111) | o | Lowercase o |
| 112 | Chr(112) | p | Lowercase p |
| 113 | Chr(113) | q | Lowercase q |
| 114 | Chr(114) | r | Lowercase r |
| 115 | Chr(115) | s | Lowercase s |
| 116 | Chr(116) | t | Lowercase t |
| 117 | Chr(117) | u | Lowercase u |
| 118 | Chr(118) | v | Lowercase v |
| 119 | Chr(119) | w | Lowercase w |
| 120 | Chr(120) | x | Lowercase x |
| 121 | Chr(121) | y | Lowercase y |
| 122 | Chr(122) | z | Lowercase z |
| 123 | Chr(123) | { | Opening curly brace |
| 124 | Chr(124) | | | Vertical line |
| 125 | Chr(125) | } | Cloing curly brace |
| 126 | Chr(126) | ~ | Tilde (approximate) |
| 127 | Chr(127) | | Delete (rubout), cross-hatch box |
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