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Design a vending machine that accepts a nickel, dime, or a quarter (represented by SW1, SWO = 01,10, or 11, respectively). Thus you can only input one coin at a time. It also does not accept more than 35 cents. In real operation, the coin will be simply released. It can disburse two products, one costing 15 cents (represented by SW2) and the other costing 20 cents (represented by SW3). If both SW2 and SW3 are ON then the machine releases the change. No coin is accepted if a product request is set. You should display the amount with the machine using two seven segment displays. You should also display the next coin being accepted as a two digit number (00, 05, 10, or 25) on two 7-segment displays using a simpler decoding. The next product being disbursed can be displayed on another 7-segment (none - 0, first - 1, second - 2, and change 3) when state advances to the next state.

Assume you already have 7-segment display. All I want know is:

1.state diagram

2.Ture table

3.K-map

4.expression

5.Cicuit diagram

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M9836603

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