Review the cellular telephone state machine diagram in Figure and then answer the following questions. (This telephone has unique characteristics that are not found in ordinary telephones. Base your answers only on the state machine diagram.)

a. What happens to turn on the telephone?
b. What states does the telephone go into when it is turned on?
c. What are the three ways that the telephone can be turned off?
d. Can the telephone turn off in the middle of the Active (Talking) state?
e. How can the telephone get to the Active (Talking) state?
f. Can the telephone be plugged in while someone is talking?
g. Can the telephone change battery states while someone is talking? Explain which movement is allowed, and which is not allowed.
h. What states are concurrent with what other states? Make a two-column table showing the concurrentstates

Transcribed Image Text:

Plugged in switchOff (0 plugin()T- unplug 0 switchOn 0 Quiet ーラ| Dialing Connecting Off answer 0 Ringing Active (Talking) hangUp 0 Charged Low warning Uncharged pluggedin 0 [1/2 hour]