ASCII
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The American Standard Code for Information Interchange (ASCII) is a plain text encoding standard used internationally as the basic human-readable encoding standard. The most commonly used (and the definitively standardized) form of ASCII is 7-bit ASCII, which uses characters 0 through 0x7F (decimal 127) to display all the basic Latin alphabet characters, plus Arabic numerals, international text symbols, and ASCII control codes.
Table of 7-bit ASCII characters
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 0A | 0B | 0C | 0D | 0E | 0F | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 00 | NUL | SOH | STX | ETX | EOT | ENQ | ACK | BEL | BS | HT | LF | VT | FF | CR | SO | SI |
| 10 | DLE | DC1 | DC2 | DC3 | DC4 | NAK | SYN | ETB | CAN | EM | SUB | ESC | FS | GS | RS | US |
| 20 | SP | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / |
| 30 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| 40 | @ | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O |
| 50 | P | Q | R | S | T | U | V | W | X | Y | Z | [ | \ | ] | ^ | _ |
| 60 | ` | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| 70 | p | q | r | s | t | u | v | w | x | y | z | { | | | } | ~ | DEL |
IBM Extended ASCII
IBM created an "Extended ASCII" character set to utilize the eighth bit provided by 8-bit bytes that was unused by the 7-bit ASCII standard. This meant another 128 possible character spaces were free and usable. The Extended ASCII set is the one used in the text mode of IBM-compatible x86 BIOSes and/or video cards. These characters include European language accented vowels, Greek symbols, and the IBM box drawing characters. A table of the Extended ASCII characters can be found in one of the pages in the external links section below.
External Links
- http://www.asciitable.com/ - tables of both standardized 7-bit and IBM Extended ASCII characters and numerical equivalents.
- http://www.theasciicode.com.ar/ - tables of ASCII characters and their graphical symbols (those used in VGA text mode). Also has information on the history of ASCII.