| 摘要 |
PURPOSE: A QWERTY keyboard attached to the back side of a mobile device is provided to enable a user to press a Z-button with the little finger by attaching the Z-button to a corner of a right-bottom part of the back side of the mobile terminal. CONSTITUTION: A QWERTY keyboard(1) is included on the back side of a mobile device. The QWERTY keyboard includes buttons which are arranged such that a user can conveniently input characters. The QWERTY keyboard forms the buttons in three lines on a left side and a right side. The qwerty keyboard includes the buttons on the back side to maximally use a front screen, and the number and positions of the buttons are changed.
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