| 摘要 |
PURPOSE:To prevent the double repayment by using a transaction file of pari- mutuel tickets to be repayed. CONSTITUTION:The internal and external computers CPT12, 22, 32 and 42 are prepared together with a center CPT11 which controls the series numbers of sold pari-mutuel tickets. The CPT12-42 work when the CPT11 is not working. A note ticket file which received the information on the series numbers of pair-mutuel tickets to be repayed is collated with a transaction file storing the series numbers of the pari-mutuel tickets repayed already. Thus the repayment is carried out and the series numbers of the pari-mutuel tickets to be repayed are written into the transaction file. An alarm is produced in case the corresponding series number is included in the note ticket file. Then the CPT11 writes the series number of the pari-mutuel ticket repayed double into the note ticket file. |
