| 摘要 |
<p>PURPOSE:To enable an operator to easily recognize an input waiting state by using a means which detects a window set under an input waiting state out of plural windows. CONSTITUTION:The data stored in a memory 32 are transferred to a VRAM 33 by an instruction of the program to be executed by a CPU 31 and then displayed on a CRT 34. The positions, the sizes and the display information of the windows A-C to be displayed are stored in the areas AA-CC of the memory 32. The CPU 31 checks a program instruction to be executed to decide whether a program under operation is set under a key input waiting state or not. Then it is checked for the program set under a key input waiting state is superposed whether the relevant window is superposed on another window or not. If so, the information on the superposed areas are read out of the memory 32 and the information on an area of the VRAM 33 corresponding to said superposed areas is changed for change of the luminance of a display screen.</p> |
