What is the ps machine for?

1, which merchants use to collect money. It is unrealistic and unsafe to buy a car, a house or luxury goods by swiping a card, or by buying a backpack of hundreds of thousands. So there is a pos machine, and there is a market when there is demand.

2. Personal turnover is urgent, and the credit card itself can also withdraw cash, but generally the withdrawal amount is 50% of the total amount, and the handling fee of the amount is more expensive than that of the machine, and the interest on withdrawal is calculated on a daily basis.

3. Play bonus hunter. When banks engage in credit card activities, machines are tools, and they can participate in activities with tools at the lowest cost and get returns.

1, pos machine POS(Point of sales), which means "point of sale" in Chinese, is a terminal reader equipped with barcode or OCR code technology, and has the function of teller of cash or barter bank. Its main task is to provide data services and management functions for commodity and media transactions, and to carry out non-cash settlement. POS is a multifunctional terminal. It can be installed in special merchants and acceptance outlets of credit cards, and connected with computers to realize automatic transfer of electronic funds. It has the functions of supporting consumption, pre-authorization, balance inquiry and transfer, and is safe, fast and reliable to use. It is difficult to obtain basic business information for bulk transactions, and the introduction of POS system is mainly to solve the blind spot of retail information management. An important part of chain branch management information system.

2. Internal analysis of 2.pos machine. Communication interface circuit usually consists of RS232 interface, PINPAD interface, IRDA interface and RS485 interface circuit. RS232 interface is usually the download port of POS program, PINPAD interface is usually the interface between host and password keyboard, and IRDA interface is usually the infrared communication interface between mobile phone and landline. Interface signals are usually composed of sending signals, receiving signals and power signals. The modem board consists of central processing module, storage module, modem module and telephone line interface. First, the POS will detect the /RING and /PHONE signals to determine whether the voltage on the telephone line can be used. The switch is reset, you can dial, and the sending light flashes to start dialing. The communication protocol determines the handshake confirmation between the switch and the POS, and then the data exchange of the POS will start, and the signal will be sent and received through the modem circuit. Hang up when finished and end the process.