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Traffic light (state diagram) — State Diagram

A three-state finite state machine for a traffic signal — Red, Green, Yellow — with timer-driven transitions and a poweroff exit to a final state. Introduces UML initial and final pseudo-states, transition labels, and the cyclic structure that makes state diagrams the right tool for reactive systems.

種類 状態遷移図規格 OMG UML 2.5.1 §14 + Harel (1987) statechartエンジン schematex-state更新日 2026/5/26
Traffic light (state diagram)
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依頼内容

“Draw a traffic light state diagram that starts at Red, changes from Red to Green to Yellow on a timer, returns to Red, and can end when power is turned off.”

次はこちらAdd a flashing red maintenance state.Change the power-off transition to start from every light state.

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