Language input keys
Language input keys
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Language input keys

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Language input keys

Language input keys, which are usually found on Japanese and Korean keyboards, are keys designed to translate letters using an input method editor (IME). On non-Japanese or Korean keyboard layouts using an IME, these functions can usually be reproduced via hotkeys, though not always directly corresponding to the behavior of these keys.

The OADG 109A and older 109 keyboard layouts which are the standard for Microsoft Windows have five dedicated language input keys:

Apple keyboards designed for Mac OS X have two language input keys: alphanumeric (英数) and kana (かな).

The keyboards for NEC PC-9800 series, which was dominant in Japan during the 1980s and early 1990s, have three language input keys: kana (カナ), NFER (no transfer, same as non-conversion), XFER (transfer, same as conversion).

For non-Japanese keyboards, the following shortcuts can be used for typing Japanese on English keyboard with Windows:

Half-width/Full-width (半角/全角, hankaku / zenkaku) toggles between entering half-width or full-width characters (if 2 versions of same character exists) when IME is on and in Katakana mode or Alphanumeric mode. After MS-IME 98, and also change between IME on and off like Kanji Key.

Used to switch between entering mainly Japanese (IME on) and English text (IME off). It is not found as a separate key in the modern Japanese 106/109-key keyboard layout. On the Common Building Block (CBB) Keyboard for Notebooks, as many 106/109-key keyboards, the Kanji key is located on the Alt+半角/全角. It is found as a separate key on the IBM PS/55 5576-001 keyboard. On the IBM PS/55 5576-002 keyboard, it is mapped to the left Alt key.

Alphanumeric (英数, eisū) toggles alphanumeric characters. In the Japanese 106/109-key layout, it is located on the Caps Lock key. Pressing Alphanumeric/Caps Lock key alone actually means alphanumeric function, a user has to press ⇧ Shift+英数 / Caps Lock key to get the caps lock function.

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