Microsoft Word - Digital Logic Design v_4_6a

 Design a vending machine control that accepts nickels, quarters and dollar bills. All products are
priced at $1.00. User may select one of 25 products that will be delivered once user has deposited
sufficient funds..
Note: Use modularization to breakdown the design to modules to reduce the design complexity of
each design.

Solution:

Step 0 – System Diagram & modularization

Step 1 – State Diagram Describing the system

Step 2 - ...... possible state  ...... Flip Flops required

Step 3 – Assign State variables and redraw state diagram

Step 4 – Excitation Input and Output Equation

Step 5 – Schematics