A cash register is a key tool in retail, used to process sales, calculate totals, and securely store cash, while modern versions handle digital payments and integrate with inventory and accounting systems. Shop management involves overseeing daily operations such as staff, inventory, and sales, often using integrated systems to track performance, optimize resources, and improve customer service. Accounting in retail tracks all financial transactions, ensuring accurate sales records, managing expenses, and maintaining compliance with tax regulations. Together, these elements streamline business operations, improve efficiency, and support financial decision-making.