| 摘要 |
<p>The invention provides a programmable display capable of making backups with other programmable displays with high reliability. The programmable display is provided with a backup data acquiring part (1524) capable of, relative to the other programmable displays, acquiring backup data of the other programmable display stored in storage devices of the other programmable displays and making backups for each other; a backup data updating processing part (1525) recording data obtained from the other programmable displays by the backup data acquiring part (1524) in an external storage medium (12) externally; and a backup data updating informing part (1523) informing a condition that the backup data is updated to the other programmable displays and sending the backup data after updating in response of demands of the other programmable displays.</p> |
