1. You are to develop a state diagram for a washing machine. The machine starts when a coin is deposited. It then sequences through the following stages: soak, wash, rinse, and spin. There is a double wash switch, which, if turned on, causes a second wash and rinse to occur. That is, a wash-and-rinse cycle is followed by another wash-and-rinse cycle. There is one timer – you may assume that each stage should take the same amount of time. The timer begins 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. This description was supplied to you by the manufacturer of a new washing machine company called Comet Washers!! You have been asked to design the controller for this machine. 
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3. Identify your inputs and outputs, and draw a state diagram that implements this finite state machine. If you finish this part then you will get about half of the total extra credit. If you professionally type up your design report and also present the design of the controller by making use of D-flipflops and extra combinational logic, you will earn the rest of the extra credit grade.