Final answer:
An IT system with touch-screen cash registers is called a point-of-sale system, used in the retail and hospitality industries to manage transactions and may include various integrated payment features.
Step-by-step explanation:
An IT system that uses touch-screen cash registers as an input method is called a point-of-sale system. This system is essential in retail and hospitality businesses for managing sales transactions. The point-of-sale system replaces traditional cash registers with a computerized system that can process transactions, manage inventory, perform analytics, and handle customer data. Such systems offer versatility and efficiency, as they often include features such as payment processing, barcode scanning, receipt printing, and integration with various payment systems like smart cards or mobile payments.