| 摘要 |
According to the present invention, a first data acquisition unit (41) acquires data from an external memory relating to each item on an arbitrary screen being displayed, and stores the acquired data in a first internal memory. A screen image display unit (42) displays/updates, on the basis of the stored data in the first internal memory, a screen image relating to the screen being displayed. A second data acquisition unit (43) acquires data from an external memory relating to each of the items on another screen, and stores the acquired data in a second internal memory. When there is an instruction to perform a switch from the arbitrary screen to the other screen, a screen switching processor (44) uses the stored data in the second internal memory to perform a switch to the other screen. |
