| 摘要 |
An information display device having an operability-improved trackball is provided. A control unit has a mechanism for displaying in such a manner that a second information display region is provided separately from a first information display region, an operation button region is arranged and displayed in a region between them, the second information display region is set as a cursor display prohibition region, and even if the operation is vigorously executed by operating the trackball, a cursor does not enter the second information display region but the cursor stops in the operation button region and one of the operation buttons in the operation button region is selected. |
