Question 6

Question 1

What is the probable content of this exam question?

Answer 1

(1) Draw a state chart.

Question 2

In a shared hallway, the light is operated by a press-button switch. Initially, the light is switched off. Whenever the button is pressed, the light is switched on. As an energy saving measure, the light only remains on for 2 minutes after being switched on,then switches itself off again automatically.

Draw a state chart diagram for the hallway light, assuming the existence of an event, ‘after(2 minutes)’ that occurs after 2 minutes of remaining in a given state.

Answer 2

See specimen paper solution booklet for answer.