Generally speaking, every POS machine has storage space. If the consumption information stored in the machine is full, the account cannot be settled. At this time, you need to find the settlement option in the pos machine, and you can use it after settlement. Principle of POS machine: Commodity information is created in computer files. Through the on-line structure of the computer cash register, the barcode on the goods can be directly read in by the optical reading device on the cash register equipment (or directly input the code through the keyboard), and the information of the goods (unit price, department, discount, ...) can be displayed immediately to speed up the cash register and correct it.

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1. Settlement through POS system should go through the following steps:

1. The local barter agent or the barter cashier system of special customers will input the purchase or consumption amount of the buyer member to the POS terminal.

2. The card reader (POS machine) reads the authentication data of the magnetic stripe on the advertising barter card and the member number (password) of the buyer.

3. The settlement system sends the input data to the supervision account of the center.

4. After the settlement data processed by the advertising barter cashier system is confirmed, it shall be signed by the buyer member. The buying and selling member and the barter agent or special merchant each keep a receipt stub, and the barter agent or special merchant will mail the receipt stub to the barter company.

5. After the barter company confirms that the buyer has received the goods or media services, the settlement center will allocate the barter quota. Complete the settlement process.

2.pos machines are suitable for large and medium-sized supermarkets, chain stores, hypermarkets, large and medium-sized hotels and all high-level retail enterprises.

1. has the function of IC card, and can use membership card to issue IC cards and securities internally.

2. You can talk.

3. A variety of peripherals such as scanning guns and printers can be externally connected.

4. It has the management functions of front-end and back-end sales, warehousing, distribution and other large supermarket chains.

5. The catering type has the catering service function, and can be externally connected with multiple kitchen printers, hand-held ordering machines and other peripherals.

6. It can realize unattended remote communication and data download with PC.

7. With the function of Ethernet communication, the real-time management system of the head office and branch network is formed through ADSL broadband.

3. The operating method of 3.pos machine is as follows:

1. If you fail to swipe your card during the transaction, you need to press the required transaction code key again to avoid mistaking other transactions for "consumption" and causing repeated deductions.

2. Enter the cardholder's password. In order to ensure the security of transactions, cardholders need to enter the correct bank card password when they trade at public POS machines. If the cardholder's bank card has no reserved password, the operator directly presses the "OK" key of the POS machine to conduct the transaction, and the transaction is successful.

Don't forget to ask the cardholder to sign the shopping list. If the cardholder's signature is inconsistent with the reserved name on the back of the card or the letter of the name on the front of the card, you can check with the issuing bank.

4. The transaction type on the printed purchase order should be carefully reviewed to avoid changing "consumption" into "pre-authorization" or "return" into "consumption", resulting in wrong accounts.