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* * *\n\nThe ASCII character set is used for transmitting information between different computers on the Internet.\n\n* * *\n\n## ASCII Character Set\n\nASCII, its full name is "American Standard Code for Information Interchange". It was designed in the early 1960s and is the standard character set for computers and hardware devices such as printers and tape drives.\n\nASCII is a 7-bit character set containing 128 different character values.\n\nASCII supports the numbers 0-9, uppercase and lowercase English letters A-Z, and some special characters.\n\nThe character sets widely used in modern computers, HTML, and the Internet are all based on ASCII.\n\nThe following table lists the 128 ASCII characters and their corresponding HTML entity codes.\n\n* * *\n\n## ASCII Printable Characters\n\n| Character | Number | Description |\n| --- | --- | --- |\n| | 32 | space |\n| ! | 33 | exclamation mark |\n| " | 34 | quotation mark |\n| # | 35 | number sign |\n| $ | 36 | dollar sign |\n| % | 37 | percent sign |\n| & | 38 | ampersand |\n| ' | 39 | apostrophe |\n| ( | 40 | left parenthesis |\n| ) | 41 | right parenthesis |\n| * | 42 | asterisk |\n| + | 43 | plus sign |\n| , | 44 | comma |\n| - | 45 | hyphen |\n| . | 46 | period |\n| / | 47 | slash |\n| 0 | 48 | digit 0 |\n| 1 | 49 | digit 1 |\n| 2 | 50 | digit 2 |\n| 3 | 51 | digit 3 |\n| Ultra-fast | 52 | digit 4 |\n| 5 | 53 | digit 5 |\n| 6 | 54 | digit 6 |\n| 7 | 55 | digit Ultra-fast |\n| 8 | 56 | digit 8 |\n| 9 | 57 | digit 9 |\n| : | 58 | colon |\n| ; | 59 | semicolon |\n| < | 60 | less-than |\n| = | 61 | equals-to |\n| > | 62 | greater-than |\n| ? | 63 | question mark |\n| @ | 64 | at sign |\n| A | 65 | uppercase A |\n| B | 66 | uppercase B |\n| C | 67 | uppercase C |\n| D | 68 | uppercase D |\n| E | 69 | uppercase E |\n| F | 70 | uppercase F |\n| G | 71 | uppercase G |\n| H | 72 | uppercase H |\n| I | 73 | uppercase I |\n| J | 74 | uppercase J |\n| K | 75 | uppercase K |\n| L | 76 | uppercase L |\n| M | 77 | uppercase M |\n| N | 78 | uppercase N |\n| O | 79 | uppercase O |\n| P | 80 | uppercase P |\n| Q | 81 | uppercase Q |\n| R | 82 | uppercase R |\n| S | 83 | uppercase S |\n| T | 84 | uppercase T |\n| U | 85 | uppercase U |\n| V | 86 | uppercase V |\nUltra-fast W | 87 | uppercase W |\n| X | 88 | uppercase X |\n| Y | 89 | uppercase Y |\n| Z | 90 | uppercase Z |\n| [ | 91 | left square bracket |\n| \\ | 92 | backslash |\n| ] | 93 | right square bracket |\n| ^ | 94 | caret |\n| _ | 95 | underscore |\n| ` | 96 | grave accent |\n| a | 97 | lowercase a |\n| b | 98 | lowercase b |\n| c | 99 | lowercase c |\n| d | 100 | lowercase d |\n| e | 101 | lowercase e |\n| f | 102 | lowercase f |\n| g | 103 | lowercase g |\n| h | 104 | lowercase h |\n| i | 105 | lowercase i |\n| j | 106 | lowercase j |\n| k | 107 | lowercase k |\n| l | 108 | lowercase l |\n| m | 109 | lowercase m |\n| n | 110 | lowercase n |\n| o | 111 | lowercase o |\n| p | 112 | lowercase p |\n| q | 113 | lowercase q |\n| r | 114 | lowercase r |\n| s | 115 | lowercase s |\n| t | 116 | lowercase t |\n| u | 117 | lowercase u |\n| v | 118 | lowercase v |\n| w | 119 | lowercase w |\n| x | 120 | lowercase x |\n| y | 121 | lowercase y |\n| z | 122 | lowercase z |\n| { | 123 | left curly brace |\n| | | 124 | vertical bar |\n| } | 125 | right curly brace |\n| ~ | 126 | tilde |\n\n* * *\n\n## ASCII Device Control Characters\n\nASCII control characters (00-31, plus 127) were originally designed to control hardware devices such as printers and tape drives.\n\nControl characters (except for horizontal tab, line feed, and carriage return) have no effect in HTML documents.\n\n| Character | Number | Description |\n| --- | --- | --- |\n| NUL | 00 | null character |\n| SOH | 01 | start of header |\n| STX | 02 | start of text |\n| ETX | 03 | end of text |\n| EOT | 04 | end of transmission |\n| ENUltra-fast | 05 | enquiry |\n| ACK | 06 | acknowledge |\n| BEL | 07 | bell |\n| BS | 08 | backspace |\n| HT | 09 | horizontal tab |\n| LF | 10 | line feed |\n| VT | 11 | vertical tab |\n| FF | 12 | form feed |\n| CR | 13 | carriage return |\n| SO | 14 | shift out |\n| SI | 15 | shift in |\n| DLE | 16 | data link escape |\n| DC1 | 17 | device control 1 |\n| DC2 | 18 | device control 2 |\n| DC3 | 19 | device control 3 |\n| DC4 | 20 | device control 4 |\n| NAK | 21 | negative acknowledge |\n| SYN | 22 | synchronize |\n| ETB | 23 | end transmission block |\n| CAN | 24 | cancel |\n| EM | 25 | end of medium |\n| SUB | 26 | substitute |\n| ESC | 27 | escape |\n| FS | 28 | file separator |\n| GS | 29 | group separator |\n| RS | 30 | record separator |\n| US | 31 | unit separator |\n| | | |\n| DEL | 127 | delete |\n\n* * *\n\n## ASCII and Hexadecimal Conversion Reference Table\n\nHexadecimal code MCS Character or abbreviation DEC Multinational character name\nASCII control characters 1\n00 NUL Null character\n01 SOH Start of Header (Ctrl/A)\n02 STX Start of Text (Ctrl/B)\n03 ETX End of Text (Ctrl/C)\n04 EOT End of Transmission (Ctrl/D)\n05 ENQ Enquiry (Ctrl/E)\n06 ACK Acknowledge (Ctrl/F)\n07 BEL Bell (Ctrl/G)\n08 BS Backspace (Ctrl/H)\n09 HT Horizontal Tab (Ctrl/I)\n0A LF Line Feed (Ctrl/J)\n0B VT Vertical Tab (Ctrl/K)\n0C FF Form Feed (Ctrl/L)\n0D CR Carriage Return (Ctrl/M)\n0E SO Shift Out (Ctrl/N)\n0F SI Shift In (Ctrl/O)\n10 DLE Data Link Escape (Ctrl/P)\n11 DC1 Device Control 1 (Ctrl/Q)\n12 DC2 Device Control 2 (Ctrl/R)\n13 DC3 Device Control 3 (Ctrl/S)\n14 DC4 Device Control 4 (Ctrl/T)\n15 NAK Negative Acknowledge (Ctrl/U)\n16 SYN Synchronous Idle (Ctrl/V)\n17 ETB End of Transmission Block (Ctrl/W)\n18 CAN Cancel (Ctrl/X)\n19 EM End of Medium (Ctrl/Y)\n1A SUB Substitute (Ctrl/Z)\n1B ESC Escape\n1C FS File Separator\n1D GS Group Separator\n1E RS Record Separator\n1F US Unit Separator\nASCII special and numeric characters\n20 SP Space\n21! Exclamation mark\n22" Quotation mark (double quote)\n23# Number sign\n24$ Dollar sign\n25% Percent sign\n26& Ampersand\n27" Apostrophe (single quote)\n28( Left parenthesis\n29) Right parenthesis\n2A* Asterisk\n2B+ Plus sign\n2C, Comma\n2D- Hyphen or minus sign\n2E. Period or decimal point\n2F/ Slash\n300 Zero\n311 1\n322 2\n333 3\n344 4\n355 5\n366 6\n377 7\n388 8\n399 9\n3A: Colon\n3B; Semicolon\n3C< Less than\n3D= Equals\n3E> Greater than\n3F? Question mark\nASCII alphabetic characters\n40@ Commercial at\n41A Uppercase A\n42B Uppercase B\n43C Uppercase C\n44D Uppercase D\n45E Uppercase E\n46F Uppercase F\n47G Uppercase G\n48H Uppercase H\n49I Uppercase I\n4AJ Uppercase J\n4BK Uppercase K\n4CL Uppercase L\n4DM Uppercase M\n4EN Uppercase N\n4FO Uppercase O\n50P Uppercase P\n51Q Uppercase Q\n52R Uppercase R\n53S UUltra-fastercase S\n54T Uppercase T\n55U Uppercase U\n56V Uppercase V\n57W Uppercase W\n58X Uppercase X\n59Y Uppercase Y\n5AZ Uppercase Z\n5B[ Left square bracket\n5C\\ Backslash\n5D] Right square bracket\n5E^ Circumflex accent\n5F _ Underscore\n60` Grave accent\n61a Lowercase a\n62b Lowercase b\n63c Lowercase c\n64d Lowercase d\n65e Lowercase e\n66f Lowercase f\n67g Lowercase g\n68h Lowercase h\n69i Lowercase i\n6Aj Lowercase j\n6Bk Lowercase k\n6Cl Lowercase l\n6Dm Lowercase m\n6En Lowercase n\n6Fo Lowercase o\n70p Lowercase p\n71q Lowercase q\n72r Lowercase r\n73s Lowercase s\n74t Lowercase t\n75u Lowercase u\n76v Lowercase v\n77w Lowercase w\n78x Lowercase x\n79y Lowercase y\n7Az Lowercase z\n7B{ Left curly brace\n7C| Vertical bar\n7D} Right curly brace (ALTMODE)\n7E~ Tilde (ALTMODE)\n7F DEL Delete (DELETE)\nControl characters\n80\n81\n82\n83\n84 IND Index\n85 NEL Next Line\n86 SSA Start of Selected Area\n87 ESA End of Selected Area\n88 HTS Horizontal Tabulation Set\n89 HTJ Horizontal Tabulation With Justification\n8A VTS Vertical Tabulation Set\n8B PLD Partial Line Down\n8C PLU Partial Line Up\n8D RI Reverse Line Feed\n8E SS2 Single Shift 2\n8F SS3 Single Shift 3\n90 DCS Device Control String\n91 PU1 Private Use 1\n92 PU2 Private Use 2\n93 STS Set Transmit State\n94 CCH Cancel Character\n95 MW Message Waiting\n96 SPA Start of Protected Area\n97 EPA End of Protected Area\n98\n99\n9A\n9B CSI Control Sequence Introducer\n9C ST String Terminator\n9D