List of the Key Components of a POS System [Infographic]

A point-of-sale (POS) system is a computerized system with several key components and parts used to complete a retail transaction.  The merchant/employee calculates the total amount owed by the customer, may print a bill if needed, and gives different options for customers to make the payment

Whether you’re already a business owner or just starting a new business, this infographic and summary below will explain the essential components of a POS system.

List of the Components of a Point of Sale System

1. POS Software

Every POS system comprises of software with a user interface and a database for analytics and other managerial functions.  This software can be installed locally or can be hosted online in the cloud.  Software features can vary greatly depending on the type of business you operate. For instance, software features for restaurants will be significantly different than software features for a retail point of sale.

2. POS Hardware

Hardware varies from system to system, depending on the needs of a business.   Some businesses prefer to have a simple POS system, so they need only a few pieces of hardware and parts, as opposed to other solutions that are more extensive.  Some of the more essential hardware components of a POS are:

  • POS Terminal – Touchscreen monitor or a mobile device like an iPad with a POS APP.  In basic POS systems, it can be just a cash register with buttons.
  • Cash Drawer – To store cash, checks, vouchers, and receipts
  • Barcode Scanner – It is typically used in retail stores, and the scanner is linked with the inventory system, so products counts are updated accordingly.
  • Printer – To print guest receipts and to print tickets to the bar or kitchen if you have a restaurant.  Today, businesses and customers prefer to email or text the receipt, in which case, you can remove the printer.  But if the local laws mandate a printed receipt, then it should be part of your POS.
  • Credit Card Machine – To process payments by debit or credit cards.
  • Network Devices – This includes routers and modems to connect to the internet.
  • Other Hardware – Tablets for table-side ordering or hardware for accepting other payment options as a few examples.

Key Components of a POS System - Infographic Diagram

Please feel free to share this Infographic diagram on your website.  Please attribute credit to if you use this image.  Download the high-res .png version.

Are you looking for a POS solution? We can help you find the perfect POS system based on your needs.  Point of Sale USA is the top online source to compare different POS systems to choose the one that’s best for you.


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