| 摘要 |
PROBLEM TO BE SOLVED: To accurately and quickly establish consistency between a terminal merchandise file in each terminal and a master merchandise file in a master equipment. SOLUTION: Deleting command transmission control means 31, 32 are included in the master equipment 30, additional storage control means 11, 12 and merchandise information deletion control means 11, 12 are included in each of respective terminals 10A to 10N and each terminal 10 is formed so as to additionally store merchandise information answered from the master equipment 30 in a terminal merchandise file 13F built in the terminal 10 itself. Each terminal 10 is formed so as to delete merchandise information stored in a terminal merchandise file 13F built in the terminal 10 itself at the time of receiving a merchandise information deleting command from the master equipment 30 and the master equipment 30 is formed so as transmit the merchandise information deleting command to the terminal 10 at the time of changing merchandise information stored in a master commodity file 33MF. |
