Virtual Wallet Structure Proposal

1. Virtual WalletStructure Proposal • Gates Winkler • Jordan Samuel Fei • Yin Shen • September 28, 2009 To create a handheld device which will save money and time through budget assistance and improve the shopping experience.

2. Status Finished • Flow Chart • Behavioral Verilog • Transistor Estimate • Floor Plan • Structure Proposal To Do • Schematic • Structural Verilog • Layout • Testing

3. Adder

5. Subtractor

7. Multiply Left shift

8. Divide Right shift

9. D Flip-flop

10. Comparator

12. Input FSM Initial Select Account Not enough in account Display error Connect to SecureOne Don’t input budget Set budget to max in account Input Budget Check account Start Shopping Enough in account Budget stored in memory

17. Input FSM

18. Budget FSM Don’t go over Initial Check SecureOne Database. Pay Checkout Go over Check SRAM Make note in subtractor Total not over budget Remove item Over Added another item Remove item Make note in subtractor Total still over budget Remove item

24. Discount FSM Initial Get nothing Scanned item No discount Check Database Make note in subtractor discount Check SRAM

28. Discount FSM

29. Battery FSM Good Battery Battery Good When Plugged in Battery Starts Charging and returns to the correct State when unplugged Battery Low Battery Low Battery Charging Low Battery

33. Battery FSM

34. Controller

35. Controller

36. Transistor Count (new)