| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a user interface and a program for quickly and properly meeting the needs of a user. <P>SOLUTION: The display part of a digital composite unit displays a plurality of buttons 71 to 74. When an non-selectable button 74 having no corresponding data among the display buttons is depressed by a user, a balloon from the button 74 is set in the neighborhood of the depressed button 74 to display such a sentence that "no use history found" in that balloon. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
