Software engineering.pptx
- 1. Software engineering Presented by: Nourhan Tarek PHD candidate at Ain Shams University Masters of science in Electrical engineering at Ain Shams University
- 2. 1- UML State Machine Diagrams and Modeling State Machine Diagram Illustrates the interesting events and states of an object and the behavior of an object in reaction to an event. Event: significant or noteworthy occurrence. • E.g., telephone receiver taken off hook. State: the condition of an object at a moment in time (between events). Transition: a relationship between two states; when an event occurs, the object moves from the current state to a related state.
- 3. 1- UML State Machine Diagrams and Modeling Transition Actions and Guards A transition can cause an action to fire. In software implementation, a method of the class of the state machine is invoked. A transition may have a conditional guard. The transition occurs only if the test passes.
- 4. 1- UML State Machine Diagrams and Modeling Nested States A state may be represented as nested substates. In UML, substates are shown by nesting them in a superstate box. A substate inherits the transitions of its superstate.
- 5. Presented by: Nourhan Tarek PHD candidate at Ain Shams University Masters of science in Electrical engineering at Ain Shams University Computer architecture
- 6. 2- Pipelining It is a technique of decomposing a sequential process into sub-operations. Each sub-operation is executed in a special dedicated segment that operates concurrently with other segments The overlapping of computations is possible by associating a register with segments in the pipeline The registers provide isolation between each segment, so that each segment can operate on distinct data simultaneously
- 7. 2- Pipelining 𝐴𝑖 ∗ 𝐵𝑖 + 𝐶𝑖, 𝑖 = 1,2, … , 7 Sub-operations are: The behavior of the pipeline can be illustrated by a space-time diagram
- 9. Thank you