Digital Systems

Develop a state diagram for a washing machine. The machine starts when a coin is de- posited. It then sequences thru the following stages: soak, wash, rinse, and spin. There is a "double wash" switch which causes a second wash and second rinse to occur if it is turned on. There is one timer, and you can assume that each stage will take the same amount of time. The timer starts ticking as soon as the coin is deposited, generates a T signal at the end of the time period, and then resets itself and starts again. If the lid is raised during the spin cycle the machine stops spinning until the lid is closed. You may assume that the timer suspends ticking while the lid is raised. Identify your inputs and outputs and draw the state diagram, with any explanation you feel necessary.