Use case diagram
for vending machine

About the use case diagram example

The use case diagram for a vending machine delineates the interactions between key actors and the system’s functionalities, encapsulating the operational dynamics effectively. The primary actors involved are the Customer and the Technician, each interacting with the vending machine in distinct ways. The Customer engages with the machine through three primary use cases: selecting a product, inserting money, and receiving the dispensed product. Initially, the customer browses the available items and selects a desired product. Subsequently, the customer inserts the appropriate amount of money, which the machine validates before dispensing the selected item. This seamless interaction highlights the customer’s journey from selection to acquisition.

On the other hand, the Technician is responsible for maintaining the vending machine’s operational efficiency, primarily through the restocking items use case. This involves replenishing the inventory to ensure a continuous supply of products for the customers. The diagram, with its clear representation of these interactions through ellipses and connecting lines, provides a comprehensive overview of the vending machine’s use cases. It underscores the importance of both user interaction and maintenance activities, facilitating a deeper understanding of the system’s functionality. This clarity is crucial for designing and improving vending machine systems, ensuring they meet user needs efficiently.