- Captures information that is related to book purchase - When a customer takes some books from the shelves and bring them to cashier desk, a clerk who is handling the cash register machine or computer desktop installed with POS software system insert the product numbers (usually by scanning the barcode) of the books and then type the quantity of the books into the computer. POS software system records these information into the computer database and simultaneously do its other job as a calculator.
- Creates New Information - During the transaction process, the POS software creates new information such as the total amount of money which the customer has to pay. Perhaps the price of the books is 35 dollars and he or she pays it using a 50 US dollar bank note. The clerk has to enter the value of 50 into the cash register machine and the POS software will tell him that he has to pay 15 US dollars back to the buyer as change for the book purchase transaction.
- Conveys information - I have mentioned above that the POS software system that is running inside the cash register machine or the cashier's computer displays 15 US dollars as the amount of change that the clerk has to pay back to the customer. Such information is conveyed to the clerk (as an order entry specialist) in less than one second. At the time when he hits the enter button of the computer keyboard - after typing 50 US dollars, the POS software - as shop calculator - do its job telling him or her to pay 15 US dollars as change for the purchase. The display of such information on the computer screen as one of the ways which POS software can do to convey information. Another information can also be conveyed in printed form.
- Cradles the purchase transaction into the computer database - When doing its job as cash register and shop calculator for the bookstore, at the same time the POS software system stores the information of the book purchase transactions into the computer database updating the number of books (stocks) in inventory system.
Also read: Bookstore management system