How to Use a POS Cash Register System

By Howard Altman

A Point Of Sale (POS) system requires a fair amount of set-up before it is usable. The most popular POS system in use today is IBM's 4690 OS with general sales application. The OS provides an interface to all the peripheral devices, such as scanners and printers, while the application provides retailers with the ability to enter and manage product data. The general sales application helps retailers keep track of inventory, sales, restrictions and promotions.

Step 1

Enter the UPC number for each item. Include the cost, sale price and department of the item to help track sales later.

Step 2

Enter age restrictions that apply to the item. Age restrictions are used to prompt the cashier to enter the customer's date of birth. The POS system will determine if the customer is able to purchase the item.

Step 3

Enter quantity restrictions on the item if any exist. Certain cold remedies can only be purchased in small quantities to prevent using them to create illicit drugs.

Step 4

Attach the POS printer, displays and scanners to the register. The hardware should be fully tested to insure that a bar code can be scanned and a receipt printed before putting the register into service.

Step 5

Test restricted items at this time. Alcohol and tobacco products should prompt for date of birth ID which will restrict the sale of the item if the customer is underage.

Tips & Warnings

  • Not all countries and states have the same laws governing restrictive items. Be sure to check local laws before offering items for sale.