A point-of-sale system, or POS system, is a combination of hardware and software that businesses use to complete sales transactions. It typically includes a cash register, a computer, and a payment processing device. These systems help track sales, manage inventory, and generate reports, making it easier for businesses to operate efficiently. Modern POS systems can also integrate with other business tools, such as inventory management and customer relationship management software. They can accept various payment methods, including credit cards, mobile payments, and cash. This versatility makes them essential for retail stores, restaurants, and other service-oriented businesses.