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The meaning of each extended code point can be different in every encoding. In order to correctly interpret and display text data (sequences of characters) that includes extended codes, hardware and software that reads or receives the text must use the specific extended ASCII encoding that applies to it. Applying the wrong encoding causes ...
In 1973, ECMA-35 and ISO 2022 [18] attempted to define a method so an 8-bit "extended ASCII" code could be converted to a corresponding 7-bit code, and vice versa. [19] In a 7-bit environment, the Shift Out would change the meaning of the 96 bytes 0x20 through 0x7F [a] [21] (i.e. all but the C0 control codes), to be the characters that an 8-bit environment would print if it used the same code ...
For example, an ASCII (or extended ASCII) scheme will use a single byte of computer memory, while a UTF-8 scheme will use one or more bytes, depending on the particular character being encoded. Alternative ways to encode character values include specifying an integer value for a code point, such as an ASCII code value or a Unicode code point.
A code point is a value or position of a character in a coded character set. [10] A code space is the range of numerical values spanned by a coded character set. [10] [12] A code unit is the minimum bit combination that can represent a character in a character encoding (in computer science terms, it is the word size of the character encoding).
ASCII (/ ˈ æ s k iː / ⓘ ASS-kee), [3]: 6 an acronym for American Standard Code for Information Interchange, is a character encoding standard for electronic communication. . ASCII codes represent text in computers, telecommunications equipment, and other devic
BASIC—Beginner's All-Purpose Symbolic Instruction Code; BBP—Baseband Processor; BBS—Bulletin Board System; BC—Business Continuity; BCC—Blind Carbon Copy; BCD—Binary Coded Decimal; BCD—Boot Configuration Data; BCNF—Boyce–Codd normal form; BCP—Business Continuity Planning; BCP—Best Current Practice; BE—Backend
Code points are commonly used in character encoding, where a code point is a numerical value that maps to a specific character.In character encoding code points usually represent a single grapheme—usually a letter, digit, punctuation mark, or whitespace—but sometimes represent symbols, control characters, or formatting. [4]
ISO-8859-7 is the IANA preferred charset name for this standard (formally the 1987 version, but in practice there is no problem using it for the current version, as the changes are pure additions to previously unassigned codes) when supplemented with the C0 and C1 control codes from ISO/IEC 6429.