Design a control system for a hot coffee vending machine using D flip-flop. Hot coffee inside the machine costs 70 cents, and the machine accepts 50 cents and 20 cents only. The inputs to the control are a set of two signals that indicate what kind of coin has been deposited, as well as a RESET signal. Assume that only one coin is inserted on each cycle because the machine cannot accept more than one coin. The control system should generate an output signal that causes the hot coffee to be delivered whenever the amount of money received is 70 cents and return any necessary changes. Once the hot coffee has been delivered, an external circuitry will generate a RESET signal to put the control system back into its initial state. It should then be ready to start accepting coin for the next hot coffee. Simulate the design in Multisim.

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