Cash register is a device for recording payment amounts and handling cash in a retail POS system. The 4 most popular types of cash registers are electronic cash registers (ECR), point of sale cash registers on desktop, mobile cash registers on tablets, and cloud-based cash registers. But how do cash registers work? Most cash registers have the same fundamental way of working. Thus, this article will introduce how to use a cash register with 3 key retail processes. All you need is to bring your cash registers to practice step by step with our guide. Let’s get started!