| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to intuitively estimate how many operation buttons there are as a whole.SOLUTION: A display operation device comprises: a display device (2); and display control means (3, 5) that, when displaying a function selection screen on a display screen of the display device (2), displays a function using a three-dimensional operation button, and displays all three-dimensional operation buttons (10) corresponding to all functions on the display device (2) in a bird's-eye view. |
