| 摘要 |
The essence of the invention is characterised by the fact the device is equipped with the additional flat alphanumeric keypad (2), folding or retracted, located between the surface (A) and surface (B) or under the surface (B) of the telecommunication device (1), attached to it by means of both a hinge and connector or by a separate connector. Moreover, the additional alphanumeric keypad (2) is located on the left or right side of the main keypad or under the main keypad (4) of the telecommunication device and has a mechanism which prevents the additional alphanumeric keypad (2) from opening and closing. Moreover, the additional alphanumeric keypad (2) is non-replaceable or replaceable as a whole, together with other electronic devices, so the telecommunication device (1) and the additional alphanumeric keypad (2) constitute one integrated device. |
