EUC and ASCII Compatibility

EUC has character encoding maps for English characters and numbers. However, these mappings are double-byte characters and do not correspond to the ASCII encoding maps. EUC and ASCII can be used in the same document and often are. Problems occur if double-byte EUC characters are inputted into a document or database and single-byte ASCII characters are entered for the search.

In the screen capture below, I have shown both ASCII and EUC characters in the same document. Note that the EUC characters are larger and take up double the width of the ASCII characters. Below this, there is a sample of some special characters that are not Kanji, but do not appear in ASCII in double-byte form.