5.5 Design the control circuit for a vending machine with the following specifications: Simulate in proteus and make video as well • The vending machine accepts nickels (N) and dimes (D) When the machine has received 15 cents it delivers a package of candy. If too much money has been added, the machine returns the difference. When the candy has been released, ,the release mechanism brings the circuit back to the original, starting state.

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Latches and Flip Flop

Just like logic gates, the latches and flip-flops are the important elements of an electronic circuit. The logic gates form the important part of combinatorial circuits, while the latches and flip-flops form the essential part of a sequential circuit. Sequential circuits form the important concept of automata theory in electronics and electrical engineering, these circuits are a kind of logic circuit whose output depends on both present input and past inputs, that is, the input history.