JCUKEN

Used on typewriters before personal computers. It is available in Microsoft Windows as a legacy layout.

The short U is located in place of the shcha. It is the only JCUKEN keyboard that lacks a key for И, as it is the only language in the Cyrillic script that does not contain the letter И itself; the decimal I replaces it. It also lacks a Hard Sign, usually seen just to the right of letter Ha Х as that position is taken by the Apostrophe.

The decimal I replaces the yeru (Ы ы) and the yest (Є є) replaces the E (Э э). The letter Yi (Ї ї) substitutes for the hard sign (Ъ ъ), and Ghe with upturn (Ґ ґ) is also used.

The Russian letters which are rarely used in Tatar are typed with AltGr (right Alt). This layout is also suitable for Kalmyk and Turkmen (Cyrillic) as their alphabets are practically identical to Tatar. It is called as YÖUKEN.

An "upgraded" version based on the basic Russian one, the additional Kyrgyz letters are typed with AltGr (right Alt). Thus, AltGr + У is Ү, AltGr + О is Ө, and AltGr + Н is Ң.

This is a modified version of JCUKEN called YQUKEN, in which the Ka with descender (Қ қ) substitutes the C (Ц ц). The yeru (Ы ы) is replaced by the letter Che with descender (Ҷ ч). Also, the soft sign (Ь ь) is replaced by the I with macron (Ӣ ӣ). Further, the Kha with descender (Ҳ ҳ), the U with macron (Ӯ ӯ), and the ghayn (Ғ ғ) are used. (In Unicode, Kha with descender is known as "Ha with descender".)

The short U substitutes the shcha, like the Belarusian keyboard (see above), and the ka with descender substitutes the yery. Moreover, the letter ghayn substitutes the minus sign and the underscore, while the kha with descender substitutes the plus sign and equal sign.

This layout is a modified version called the JÜUKEN, and includes the Che with vertical stroke, shha, Ka with vertical stroke, and the Je. It is the only JCUKEN without the usual Й, as the language lacks the glyph.

Substitutions to this keyboard are: having the schwa replacing the ya, the oe replacing the yu, the ghayn replacing the soft sign, the Che with vertical stroke replacing the hard sign, the ue replacing the tsa and the shha replacing the shcha.

The Mongolian keyboard uses a modified version of JCUKEN, called FCUZHEN (ФЦУЖЭН), where letters specific to Russian are replaced by letters that see more use in Mongolian.

The Serbian keyboard called LJNJERTZ (ЉЊЕРТЗ), where letters of Serbian language was used instead of Russian letters. It lacks the yers and yeru (Ъ ъ, Ь ь and Ы ы), Э, and Ё. It is based on the QWERTZ keyboard.

Also utilizing a modification of the Serb-style LJNJERTZ (LJNJERTDZ), a single "dead key" is used for input for Macedonian letters Gje «Ѓ ѓ» and Kje «Ќ ќ», as well as the typewritten apostophe (in combination with the «spacebar»): «м. к. á», «К к» → «Ќ ќ», «м. к. á», «space» → «'».

Macedonian keyboard layouts under Microsoft Windows (KBDMAC.DLL and KBDMACST.DLL) do not use "dead keys". Instead, letters Gje and Kje are present as dedicated keys, and AltGr is used to access additional letters and punctuation.

Standard Bulgarian keyboard from 2006 (YUEIShShch)

Phonetic Cyrillic keyboard layout for Bulgarian in 2006 (Also known as "ЧШЕРТЪ" ChShert).