A Brief History of Character Codes
in North America, Europe, and East Asia -- by Steven J.
In other words, in order to guarantee the portability of existing software, decisions on the direction of the layout have to rely only on the semantics of character codes
, not the presence of extra directional idiosyncrasies in the stored text.
Some of the difficulty with Chinese character communication is due to the size of the character codes
ISO 10646 supports the character codes
from many existing character sets while Unicode takes the "unification" approach of eliminating the duplicate Han characters.
The requirements are wide-ranging, including: technical conventions for the structure of records--leader, directory, data fields, character codes
, characters to be used as field and record terminators, etc,; specification of how certain types of information is recorded--the treatment of characters to be ignored in filing as field indicators, the definition of codes for languages and countries of publications; and definition of specific record elements for specific functions.
Note 1: Emoji Emoji are emoticons and other animated characters, expressed using GIF, JPEG or other image files rather than the conventional character codes
such as Unicode used to create emoticons.
Visitors to the Teledyne DALSA booth can expect to find live demonstrations featuring both iNspect and Sherlock vision software making pass or fail determinations, and reading Barcodes, 2D Matrix codes and printed character codes
For example, using the ASCII character codes
, if the word "a" hashes to 0 and the word "i" hashes to 15, it turns out that the word "in" must hash to 0.
Realizing that ASCII did not include special character codes
, such as diacritics, the library community added one more bit to ASCII to make the so-called Extended ASCII (eight bits), and so it is able to represent 256 characters.
Korpela is a consultant who specializes in character codes
, localization, orthography, usability, and accessibility.