What is POS (point of sale)?

device connects to Issuer Bank through Acquirer Bank to get approval on electronic payments trial called Transaction.

A point of sale (POS) is the place where sales are made. On a macro level, a POS may be a mall, a market or a city. On a micro level, retailers consider a POS to be the area where a customer completes a transaction, such as a checkout counter.

This is made for market buissiness sector,we can use these different level of kinds. analyze sales data, figure out how well all the items on your shelves sell,adjust purchasing levels accordingly,maintain a sales history,scannning barcode to barcode,accuracy date,price,time,stock, improve pricing accuracy by integrating bar-code scanners and credit card authorization ability with the POS system,choose any exchange currency,secure with password on system each chashier,checking on line live transactions and  trasaction saved in Hard disk on time and can communicate  server if any error occured.on time updating price changes,date changes,promotions and make customer discounts.we can use also cash offices,customer services,IT,buying.

POS IS AN POINT OF SALE WHICH IS USED IN STORE TO CHECK THE STOCK LEVEL PHY VS SYS. AND FOR BILLING TO CUSTOMERS.

Device connect to server accept magnetic and ICC card that perform transaction through on line or of line authorization

point of sale is commonly used through sale transactions using touch screen monitors or devices.

point of sale registration 

The point of sale (POS) or point of purchase (POP) is the time and place where a retail transaction is completed. At the point of sale, the merchant would calculate the amount owed by the customer and indicate the amount, and may prepare an invoice for the customer (which may be a cash register printout), and indicate the options for the customer to make payment. It is also the point at which a customer makes a payment to the merchant in exchange for goods or after provision of a service. After receiving payment, the merchant may issue a receipt for the transaction, which is usually printed, but is increasingly being dispensed with or sent electronically.[1][2][3]