| 摘要 |
PROBLEM TO BE SOLVED: To continue a transaction job even when a display device on an operator side fails. SOLUTION: A commodity sales data processor 101 includes a first display device 107 and a second display device 108. In addition, the display data for the operator is input to the first display device 107, the display data for a client is input to the second display device 108 and the display data for the operator is input to the second display device 108 when the second display device 108 is positioned on the operator side. COPYRIGHT: (C)2009,JPO&INPIT
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