FIELD: electronics.
SUBSTANCE: double-mode portable communication device or mobile station, which use introduction of data by means of keyboard, is described. Keyboard has many keys disposed in format of keyboard standard setting-up. Number of alphabet keys is reduced in relation to standard keyboard setting-up in such a way that number of alphabet keys is less than 26 and more than 9.
EFFECT: improved comfort of data input; reduced number of keys.
45 cl, 12 dwg
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