A Stamps vending machine is described as follows: Two coin-slots are available for introducing 1$ and 5$ coins. Two buttons allow selecting whenever a 15 stamp or 5 stamps of 1$ each. Note that a choice may be the sum of two selections. The customer selects his choice and introduces the coins. Only one coin can be introduced by slot for a desired number of stamps. If the customer makes a selection and the amount deposited is equal to or greater than the price of the selection, the stamps are delivered and the excess money (if any) is returned. (The change calculation is not considered within this problem) If the money dropped in is less than the selection price, the stamps are not delivered and the money is returned The stamps are stored in two different drawers: One for the regular stamps (of 1$) and another for the 5 stamps packs. to be comprehensively synthesized as follows: 1) using an Active High Decoder of your choice and an OR gate 2) using Active Low Decoder of your choice and a NAND gate 3) using a ROM of your choice 4) using a PLA A Stamps vending machine is described as follows: Two coin-slots are available for introducing 1$ and 5$ coins. Two buttons allow selecting whenever a 15 stamp or 5 stamps of 1$ each. Note that a choice may be the sum of two selections. The customer selects his choice and introduces the coins. Only one coin can be introduced by slot for a desired number of stamps. If the customer makes a selection and the amount deposited is equal to or greater than the price of the selection, the stamps are delivered and the excess money (if any) is returned. (The change calculation is not considered within this problem) If the money dropped in is less than the selection price, the stamps are not delivered and the money is returned The stamps are stored in two different drawers: One for the regular stamps (of 1$) and another for the 5 stamps packs. to be comprehensively synthesized as follows: 1) using an Active High Decoder of your choice and an OR gate 2) using Active Low Decoder of your choice and a NAND gate 3) using a ROM of your choice 4) using a PLA