A state chart diagram, also known as a state transition diagram or state machine diagram, visually represents a system's behavior by showing its various states and the transitions triggered by events. Its purpose is to model complex system behavior, define states and transitions, and analyze system interactions. Key components include initial state, states, transitions, and final state, which are essential for depicting the dynamics of the system.

1. STATE CHART
DIAGRAM

2. DEFINITION:
● State transition diagram / State machine diagram.
● A visual representation of a system's behavior, showing
the different states it can be in and the transitions between
those states.
● Describe the flow of control from one state to another.
● The state changes when an event is triggered.

3. PURPOSE :
● Model complex systems' behavior.
● Define system states and transitions.
● Analyze and design system interactions.
● To model dynamic aspect of a system.
● To define different state of an object.

4. BASIC COMPONENTS ;
● Initial State : define the beginning of system.
● State : define the condition or state of an object.
● Transition: define the change from one state to another.
● Final State : define the end of system.
Initial state State Transition Final State

5. To draw a State diagram:
● Identify the object to be analysed
● Identify states
● Identify the events

6. CONSIDER A ATM :