INPUT SYSTEM, INPUT METHOD, AND SMARTPHONE

摘要

PROBLEM TO BE SOLVED: To provide a reduced keyboard that is used in a portable electronic apparatus and has the small display area.SOLUTION: A reduced keyboard 200 includes virtual keys 201 and a keyboard window 250. The virtual keys 201 are not entirely displayed on a display, and some of the keys are displayed on the keyboard window 250. The keys displayed on the keyboard window are changed by the operation from a rear-face touch panel provided on the rear face of a housing. Keys displayed on a selection area defined in the keyboard window are selected to complete input.