Online Store Application Design  -  continue

 

 

Finite State Machine for Customer IC

 

 

 

 

 

 

 

 

 

 

 

S₂₀ : initial state.

 

S₂₁ : At this state, customer IC performs placing order action. Outputs “order information” (include credit card information) to

       company IC.

 

S₂₂ : When “order confirmed” message arrives, customer IC knows order is available. It changes to S₂₂ to wait for order.

 

S₂₃ : When the products arrive, customer IC’s state changes to S_23. Action performed is to pick up the products.