JIS X 0201

The JIS X 0201, developed in 1969, is the first Japanese character encoding, which has found widespread use. JIS stands for Japan Industrial Standard, the counterpart to the DIN. The character set is an extension of ASCII codes from seven to eight bits. This provides 128 more characters available. However, this is not enough to accommodate the entire Japanese writing system with two syllabic scripts and at least 2,000 Chinese characters. Instead, only a syllabary was implemented, the katakana, which by then already was the only font used in telegrams. Just a few years later, in 1978, then 6226, the first pleading on the basis of 16 bits or 2 bytes was developed with the JIS C, which allowed the implementation of Kanji with its maximum of 65,535 characters. Based on the JIS C 6226 then most of today's popular fonts for Japanese have been developed such as Shift-JIS.

Problems

Been in JIS X 0201 took over the code positions 0 to 127 7- bit encoding JIS novel, in which two characters backslash ( \), and tilde ( ~ ) by the yen symbol (¥ ), and the overline (¯ ) replaced were. This has led to the Japanese on computers paths under DOS / Windows as C: ¥ Program Files ¥ appear.

A second long-term consequence of the pleading, the half -width Katakana ( half-width katakana ). In JIS X 0201 Katakana are represented by a single byte, and the first reactions, the Katakana were not - as hitherto usual in the Japanese writing system - shown in a square, but as Latin letters in half-width. In the following character sets, a new full- width Katakana block was introduced, in which the first of two byte Katakana occupied and second, had the normal width. Most modern character encodings include both sets.

Table of ASCII expansion area

In the table, unnamed characters beyond 127 ( 7Fhex ) are not used.

• Character encoding for the Japanese writing