Question: Design a vending machine controller that accepts quarters, loonies and toonies ($2 coins). When the value of the inserted coins equals to or exceeds $1.25,

Design a vending machine controller that accepts quarters, loonies and toonies ($2 coins). When the value of the inserted coins equals to or exceeds $1.25, it must dispense the merchandise and any excess money as change.

Show the following steps:

specification, state transition diagram, state table, state table with state

assignments, truth table, minimized functions from the truth table, and a block diagram showing

the required number of D flip flops and input and output lines. You do not need to show the

implementation of the combinational circuit.

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