| 摘要 |
<p>PURPOSE:To improve input response by providing two kinds of graphic memories on the side of an input device with a display device and using one memory exclusively for echo display to coordinate input. CONSTITUTION:In the system which uses the input device united with the display device, its control circuit consists of a CPU 210, a storage device 220 for a control program, an input/output control unit 250, graphic memories (GM) 230 and 270, a liquid crystal display plate 320 and its control unit 240, and a tablet 280 for coordinate input. In this case, only results obtained by simple arithmetic operation based upon data inputted from the input device are allowed to be written in the GM 230 dedicated to the echo display and the arithmetic operation is carried out by the CPU 210 independently of the main body. Then, display data from the main body side is written in another GM 270 and the contents of the memories 230 an 270 are displayed on the display device 320 one over the other.</p> |
