PLEASE BE THOROUGH IN YOUR EXPLANATION.

3. (Credit for this problem goes to Sean Davis 50 points) Implement a Mealy model circuit to control a coin operated vending machine. This machine only accepts quarters, dimes, and nickels. Coins are inserted until a total of 30 cents or more is deposited. X1- quarter, x2 dime, X3-nickel. Only 1 coin is deposited at a time. The output signal, zl indicates whether merchandise should be provided or not; zl = 0 indicates no merchandise and zl-1 means merchandise should be given. Coincident with the last coin input, the change outputs are to be set. Assume that the machine can give a dime, 2-1, and/or a nickel, z3-1. If the customer does something silly like entering a quarter followed by a quarter, correct change does not have to be provided but the maximum amount of change should be given. Note that only 1 input can be high at a time. 3. (Credit for this problem goes to Sean Davis 50 points) Implement a Mealy model circuit to control a coin operated vending machine. This machine only accepts quarters, dimes, and nickels. Coins are inserted until a total of 30 cents or more is deposited. X1- quarter, x2 dime, X3-nickel. Only 1 coin is deposited at a time. The output signal, zl indicates whether merchandise should be provided or not; zl = 0 indicates no merchandise and zl-1 means merchandise should be given. Coincident with the last coin input, the change outputs are to be set. Assume that the machine can give a dime, 2-1, and/or a nickel, z3-1. If the customer does something silly like entering a quarter followed by a quarter, correct change does not have to be provided but the maximum amount of change should be given. Note that only 1 input can be high at a time