| 摘要 |
PURPOSE:To provide a unit for processing commodity sales registration data with which sales data for each day can be surely preserved even when unfin ished execution of an exact calculation function takes place. CONSTITUTION:A host device 20 is provided with a daily sales data storage means 24, job end discrimination means 21, 22, 23C and daily sales data storage control means 21, 22 and sales data stored in a sales data file 23M are read and stored in the daily sales data storage means 24 on the condition that a commodity sales registration job of all opened terminal equipments 10A-10N is finished (station closing). |
