Character Input Device and Portable Telephone

摘要

This portable telephone includes a display portion displaying a selection screen displaying selection keys, a touch panel sensing that a thumb or a finger of the user or a touch pen has touched the selection screen and the coordinates of the touched position and a main control portion detecting a contact size of the thumb or the finger of the user or the touch pen touching the selection screen and changing the size of the selection keys in response to the detected contact size.