| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize a display part obtained when operation is not performed and to improve user's convenience by displaying stored display contents in the case of judging that the time exceeding a specified time elapses after the last operation. SOLUTION: A user can input a message file in a server 2 or update the message file in the server 2 by using PCs 3 and 4 connected to a LAN 5. When the message file is newly inputted or updated, the server 2 informs a PPC 1 of that effect. When the PPC 1 is informed that the message file is updated, it reads the message file from the sever 2 and stores it in the message file table of a RAM functioning as the main memory of the PPC 1. When the operation of the PPC 1 is not performed for a fixed time, the display of an ordinary picture is made to disappear and only a message based on the message file stored in the message file table is displayed on the display part 84 of a control penal 18. |
