| 摘要 |
A fixed amount sales system adopted in a gasoline stand or the like for preventing operation efficiency reduction which is the case due to independent payments of fuel supply charge and option item amount is disclosed. In the fixed amount sales system, in which the amount of gasoline corresponding to balance amount as a difference of the money amounts of items desired to be bought by a customer among option items (or TRA items) from a preliminarily selected fixed amount is sold by weighing, thus making the giving and taking of small amounts of money and changes between the customer and the shop unnecessary. The fixed amount of money adoption items as selected by the customer, are displayed on a menu 22 in the POS terminal 20for selection by a touch operation of electronic buttons or the like.
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