| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a display input device capable of superimposedly displaying an image based on the data transmitted for a CPU with the image based on the data inputted from a touch panel and reducing the burden applied to the CPU when the images are superimposedly displayed. SOLUTION: A display device control part 7 writes the display data answering to the data inputted to the touch panel 2 and the display data from the CPU 9 respectively in dual port VRAM 5 and VRAM 6, and respectively reads out the display data from the dual port VRAM 5 and VRAM 6 to output the read out display data to a display device 8. In such a manner, by displaying the image based on the display data inputted by depressing the touch panel 2 on the display device 8 without through the CPU 9, since the load applied to the CPU 9 is reduced, the images are superimposedly displayed without affecting the throughput of the whole display input device.</p> |
