Software Design 2e - DIM

174Some design representationsFigure 7.41 Diagram for Exercise 7.3.7.3 Complete the Statechart in Figure 7.41 by adding the internal transitions and any furtherexternal ones.7.4 Draw a Statechart that describes the operation of a simple electric cooking ring. (Remember,even if the ring is switched on, it will not need current whenever its temperature is higherthan the selected level.)7.5 Choose a set of representations that you consider suitable for the most recent program thatyou have written, and use them to describe (or document) its structure.7.6 Draw a DFD that represents the processes involved in cooking and serving a three-coursedinner, including all such associated tasks as laying out the table. Seek to ensure that yoursolution does not impose any unnecessary assumptions about the sequencing of actions.7.7 Transform the Statechart in Figure 7.41 into an STD (consider only the lowest level states)and then into an STT. Using the latter, identify any inconsistencies and redraw the STD.