The Guide to POS Terminal Parts: Understanding the Components of Your Payment System

Point of sale (POS) terminals are the backbone of modern retail businesses. They handle transactions quickly and securely, providing customers with a seamless shopping experience. However, not many people know what components make up a POS terminal and how each part functions.

In this guide, we’ll take a closer look at the various parts that make up a POS terminal and how they work together to process transactions.

The Basics: What is a POS Terminal?

Before we dive into the individual parts of a POS terminal, it’s important to first understand what a POS terminal is and how it works.

A POS terminal is a computerized system that allows businesses to process transactions at the point of sale. It typically includes a computer, monitor, barcode scanner, cash drawer, and a credit card reader. When a customer makes a purchase, the transaction details are entered into the POS terminal, which then communicates with the payment processor to verify the transaction and transfer funds.

Now that we have a basic understanding of what a POS terminal is, let’s take a closer look at the individual parts that make up the system.

1. Computer

The computer is the central processing unit (CPU) of the POS terminal. It runs the operating system and the POS software, and manages all of the processes involved in processing transactions. A good POS computer should be fast, reliable, and have enough storage capacity to store all of your data.

2. Monitor

The monitor is the visual interface between the POS terminal and the user. It displays the transaction details and prompts the user to take specific actions. A good POS monitor should be clear, bright, and easy to read in all lighting conditions.

3. Barcode Scanner

The barcode scanner is used to scan the barcodes on products, which generates a unique identifier for each item. This identifier is then used by the POS software to look up pricing, inventory, and other relevant information about the product. A good barcode scanner should be fast, accurate, and durable.

4. Cash Drawer

The cash drawer is used to store cash, coins, and other tender types in the POS terminal. It’s typically located at the bottom of the terminal and can be securely locked to prevent theft. A good cash drawer should be sturdy, easy to open and close, and have enough compartments to organize different types of tender.

5. Credit Card Reader

The credit card reader is used to scan credit and debit cards, and process transactions using the customer’s payment information. There are several types of credit card readers, including magnetic stripe readers, chip readers, and contactless readers. A good credit card reader should be fast, secure, and able to process all types of cards.

6. Receipt Printer

The receipt printer is used to print out receipts for customers after a transaction has been completed. It’s typically located at the top of the POS terminal and can print in a variety of formats, including thermal and dot matrix. A good receipt printer should be fast, reliable, and produce high-quality, easy-to-read receipts.

7. Keyboard

The keyboard is used to enter information into the POS terminal, such as item codes, prices, and other data. It’s an essential part of the POS system and should be durable, easy to type on, and have all the necessary keys and buttons.


Having a firm grasp of the various parts of your POS terminal will help you make informed decisions about the best system for your business. Each component plays a critical role in facilitating your transactions at the point of sale, and selecting high-quality components will ensure a smooth and secure payment process for your customers.

We hope this guide has been helpful in understanding the basics of POS terminal parts. As always, if you have any further questions or would like to discuss the right POS system for your business, don’t hesitate to contact us.

POS Terminals

Breaking through commercial boundaries for
complete payment experience

Portable Handheld POS Terminal With Printer-S600

- Built-in POS receipt printer uses 58*35mm printing paper, no need of print cartridges or ribbons for low operating cost, low noise and high speed while printing.

- Integration of Various Payment Methods, such as Magnetic stripe cards, IC cards, con-tactless cards,QR code payments.

- Support 4G,3G, 2G, Wi-Fi, Bluetooth, and GPS positioning, support blue-tooth printer mode and ESC/POS mode. Improve your efficiency.

- With premium quality 3100mAh 7.6V Li-ion battery, fast charging, long usage time and large capacity enduring working time.

- Android POS terminal receipt printer support preinstalled catering, store management APP. Free SDK support if you plan to make your own APP, Compatible with custom Android software.

Efficient Work

Mobile Portable Printer, 0.2 seconds to complete a code scan. It fits for 58mm receipt printer with Android 12.0 OS, more environmental and cleaner. A swift printing speed of 120mm/s boosts 20% working efficiency, and low noise while printing receipts offers you a comfortable working occasion.

Printing Speed

Paper Width

Paper Diameter

Scan code

Kingtop Financial Bank-Grade POS Terminals

·Trusted Point-of-Sale Platforms for Transaction Processing
·Reliable Receipt Printing and Long Battery Life
·Powerful and Versatile POS Systems for Retail Business
·All-in-one POS Systems for Efficient Transaction Processing
·Scalable Solutions with Bulk Discounts for Large Orders

Why Choose Us?

We’re here to help tailor our comprehensive business solutions to your specific needs.

5G Fast Connectivity

Our tablet devices are equipped with advanced 5G modules that support various network bands and protocols, which allows you to enjoy fast and stable internet access anytime and anywhere.

Rich Production Experience

We have been focusing on the production of intelligent mobile devices for 15 years, and we have a deep understanding of the industry trends and customer needs. We can provide you with high-quality products that meet your expectations and requirements.

Trouble Shooting

We have a professional and responsive customer service team that can solve any problems you encounter within 24 hours. You can also contact our engineers directly for technical support and guidance.


We can customize your tablet devices according to your specifications and preferences. You can choose the size, color, logo, software, hardware and accessories of your tablet devices. We will offer you the best solution that suits your budget and needs.

Prouduct Selection

We have a wide range of tablet devices for you to choose from, with different features, functions and prices. Our professional sales team will recommend the most suitable and cost-effective products for you based on your needs and preferences.


We have a professional R&D and design team that can develop innovative and unique tablet devices for you. We have 15 years of experience in software and hardware development, and we can create solutions that satisfy your customers and the market.Don’t miss this opportunity to get the best 5G tablet device for your business or personal use. Contact us today and get a free quote and sample!

Which POS Terminal is right for you?

Get the product features and functions you are looking for immediately.

Talk to us >        SAMPLE TEST >



IPS Screen,720*1280


3100mAh, 7.6V, long use time


120mm/s high-speed precision printing sign

Full specs→



IPS Screen,720*1440


2500mAh, 7.6V, long use time


100mm/s high-speed precision printing sign

Full specs→