Object and its States Status Representations ②lampSimple.opa 回☒ State is a situation at which the object can exist for some positive duration of time(and implicitly can change). lamp ■ Process change the state of a particular objects,the operand Lamp For simple objects,the state can be represented by a rounded rectangle within the rectangle representing the object of） on Status off on Examples: -When thinking about tranporation,a person: -When thinking about heating.a home Cad wam When thinking about assigning,an array Implicit Status Explicit Status Representation Representation System Engineering by J.J.Gao ③cLao 国 25 ③cLGo 国 Process Thought Exercise Processing Look at things and decide if they are objects or .A process is the pattern of transformation applied to one or process-have states or change states more objects Can not hold or touch a process-it is fleeting Generally creation,change,or destruction .A process relies on at least one object in the pre-process set A process transforms at least one object in the pre-process set A process takes place along a time line A process is associated with a verb System Engineering by J.J.Gao ③ctoo 27 System Engineering by .J.Gao ⑦c1Ge 国 28+ - System Engineering by J. J. Gao 25 Object and its States State is a situation at which the object can exist for some positive duration of time( and implicitly can change). Process change the state of a particular objects, the operand For simple objects, the state can be represented by a rounded rectangle within the rectangle representing the object + - Status Representations Implicit Status Representation Explicit Status Representation + - A process is the pattern of transformation applied to one or more objects Can not hold or touch a process- it is fleeting Generally creation, change, or destruction A process relies on at least one object in the pre-process set A process transforms at least one object in the pre-process set A process takes place along a time line A process is associated with a verb System Engineering by J. J. Gao 27 Process + - System Engineering by J. J. Gao 28 Thought Exercise Look at things and decide if they are objects or process-have states or change states