HTML and XHTML transmit data over the network with standard 7-bit ASCII code.
A 7-bit ASCII code can provide 128 different character values.
7-bit ASCII code to display
<HTML><!--------Result Description Entity number space & #32;! Exclamation mark & #33; " Quotation mark & #34; # sign & #35, dollar sign & #36,% percent Sign & #37;& Ampersand & #38; ' Apostrophe & #39;(left parenthesis & #40;) right parenthesis & #41; * asterisk & #42; + Plus sign & #43, comma & #44;-Hyphen & #45;. Period & #46;/Slash & #47, 0 digit 0 & #48, 1 digit 1 & #49; 2 digit 2 & #50; 3 Digit 3 & #51, 4 digit 4 & #52, 5 digit 5 & #53, 6 digit 6 & #54; 7 digit 7 & #55; 8 Digit 8 & #56 9 digit 9 & #57;: Colon & #58;; Semicolon & #59;< Less-than & #60; = equals-to & #61;> Greater-than & #62;? Question Mark & #63; @ sign & #64; A uppercase A & #65; B Uppercase B & #66; C UPPERCASE C & #67;D uppercase D & #68; E uppercase E & #69; F uppercase F & #70; G uppercase G & #71; H uppercase H & #72; I uppercase I & #73; J Uppercase J & #74; K uppercase K & #75; L uppercase L & #76; M uppercase M & #77; N uppercase N & #78; o uppercase O & #79; P uppercase P & #80; Q Uppercase Q & #81; R uppercase R & #82; S uppercase S & #83; T uppercase T & #84; U uppercase U & #85; V uppercase V & #86; W Uppercase W & #87; X uppercase X & #88; Y uppercase Y & #89; Z Uppercase Z & #90; [Left square bracket & #91; \ backslash & #92;] Right square bracket & #93, ^ caret & #94; _ Underscore & #95; ' grave accent & #96; a low Ercase A & #97; b lowercase B & #98; C lowercase C & #99;d lowercase D & #100; e Lowercas E E101;f lowercase F & #102, G lowercase g & #103, H lowercase h & #104; I lowercase i & #10 5;j lowercase J & #106; K lowercase K & #107; L lowercase L & #108; m lowercase M & #109; N lowercase N & #110, o lowercase o & #111;p lowercase p & #112; q lowercase Q & #113; r lowercase R & #114; s lowercase S & #115; t lowercase t & #116; u lowercase u & #117; v Lowercase V & #118, W lowercase w & #119, x lowercase x & #120; y lowercase y & #121; Z l Owercase Z & #122; {left curly brace & #123; | vertical bar & #124;} Right curly brace & #125; ~ Tilde & #126;-- -</HTML>
7-bit device control ASCII code
The ASCII device control code was originally designed to control hardware devices such as printers and tape drives. The code does not work in HTML documents.
<HTML><!------Result description entity number nul null character & #00; SOH start of header & #01; STX start of text & #02; ETX End of text & #03; EOT End of Transmission & #04; ENQ Enquiry & #05; ACK Acknowledge & #06; BEL Bell (ring) & #07; BS backspace & #08; HT horizontal tab & #09; LF line feed & #10; VT vertical tab & #11; FF form Feed & #12; CR carriage return & #13; So shift out & #14, SI shift in & #15;D le data link escape & #16;D C1 Device Control 1 & ; #17;D C2 Device Control 2 & #18;D C3 Device Control 3 & #19;D C4 Device control 4 & #20; NAK negative Acknowledge & #21; SYN Synchronize & #22; ETB End transmission Block & #23; CAN Cancel & #24; EM End of Medium & #25; SUB Substitute & #26; ESC Escape & #27; FS file separator & #28; GS Group Separator & #29; RS RECord Separator & #30; US Unit Separator & #31;D el Delete (rubout) & #127;- -</HTML>
HTML-----015---HTML ASCII reference manual