| 摘要 |
<p>PURPOSE:To enable a user to easily recognize the order of nodes and to prevent the generation of a malfunction by successively displaying the order of nodes displayed on a display device from the high-order level to the low-order level. CONSTITUTION:A CPU 15 controls a real memory 11, a disk control part 16 and a display control part 18 and writes or read out data relating to nodes and links to a real memory 11 and a disk 17 and the data of an execution program responding with an instruction and a specification from a keyboard/ mouse control part 14. Then the CPU 15 executes the instruction of digraph display to the display control part 18 or arithmetic processing or the like, arranges respective nodes displayed on a display device 19 successively from the node of the high-order concept to the node of the low-order concept and displays respective nodes on the window of the screen so that relating structure among respective nodes is cleared. Consequently, the digraph can be clearly displayed, the user can easily recognize respective nodes and the generation of the malfunction can be prevented.</p> |
