How is an event represented in a state transition diagram?

In a state transition diagram, an event is represented as text above an arrow. This depiction is crucial because it indicates the conditions or triggers that cause a transition from one state to another. The arrow itself symbolizes the direction of the transition, while the text provides clarity about what specific event occurs to initiate this change. This structure helps users understand how an object's state shifts in response to various stimuli or actions, making it a vital component of modeling the behavior of systems in state machines.

Understanding how events are illustrated in state transition diagrams is essential in various fields, including software development and systems engineering, as it helps in visualizing dynamic behaviors and interactions within a system.