| 摘要 |
PROBLEM TO BE SOLVED: To make display pictures of an electronic computer to be displayed on the display screen of a TV(television) in various display modes by utilizing the screen of the TV effectively. SOLUTION: A CPU makes one picture of the graph of a function expression or the like due the input operation of a user to be produced on a display screen 12 and makes picture data of one screen produced by a picture converting device to be displayed on the display screen 41 of TV and when the user inputs an EXE key, the CPU recognizes the data as one picture to store the data in a memory for picture preservation. When one picture is produced on the display part 12 again, the CPU makes picture data to be displayed on the display screen 41 and when the EXE key is inputted by the user, the CPU recognizes the picture data again as one picture and makes the picture data of the one picture which are stored in the memory for picture preservation and are displayed just before to be displayed in the area 41w being out of the frame of the display screen of the TV and erases the data from the memory and stores the picture data which are newly recognized as one picture in the memory.
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