Disclosed herein is a keypad assembly with supplementary buttons and method
for operating the same. The keypad assembly with supplementary buttons is in a
small-sized mobile communication terminal including input buttons for representing
a plurality of characters and a plurality of function buttons. The keypad assembly
has at least one mode switching button, at least one selection-indication button,
and a control unit. The mode switching button is formed on a side of the terminal
for switching an input mode for inputting different characters. The selection-indication
button is formed on a side of the terminal for selecting and indicating one of
a plurality of characters assigned to each input button. The control unit selects
and inputs a specific character assigned to each input button by pressing the input
buttons and the selection-indication button so as to select a specific input mode
by pressing the mode switching button and select and input one of a plurality of
characters assigned to a specific input button under the selected input mode. The
control unit displays the selected and inputted data on a display window of the
terminal and stores the data.
