Review of statecharts Conventional state machine modeling techniques design of discrete-event system,such as reactive systems Limitations the complexity of the state diagram increases dramatically as the number of possible states increases lack of support for concurrent constructs 可以这样理解所谓传统状态机建模技术，即在David Harell的 Statecharts之前的那些状态机图，它们具有上述的两个主要的 缺点。 Tian Zhang Nanjing University 5Tian Zhang @ Nanjing University 5 Review of statecharts „ Conventional state machine modeling techniques ‰ design of discrete-event system, such as reactive systems „ Limitations ‰ the complexity of the state diagram increases dramatically as the number of possible states increases ‰ lack of support for concurrent constructs „ 可以这样理解所谓传统状态机建模技术，即在David Harel的 Statecharts之前的那些状态机图，它们具有上述的两个主要的 缺点