Presentation is loading. Please wait.

Presentation is loading. Please wait.

Computer Science 313 – Advanced Economic Topics. Is This a Check or Money?  Currency issued by Bank of the United States  Once we figure that out: how.

Similar presentations


Presentation on theme: "Computer Science 313 – Advanced Economic Topics. Is This a Check or Money?  Currency issued by Bank of the United States  Once we figure that out: how."— Presentation transcript:

1 Computer Science 313 – Advanced Economic Topics

2 Is This a Check or Money?  Currency issued by Bank of the United States  Once we figure that out: how much was it worth?

3 Silver Standard Is Best  While now illegal, how much was this worth?

4 Silver Standard Is Best  While now illegal, how much was this worth?  WHY?

5 Other Currency Standard  What was value of these denominations?  Notes on gold standard used by banks in late 30s

6 Other Currency Standard  What was value of these denominations?  Federal reserve note from early 30s

7 How Much Is This Worth?

8  When ordering online, pay $ per check  Under $0.01 of pen ink used on the check  At cheapest, check worth little over 3.5 cents  $0.15/check for really fancy ones I found  Would need to supply your name & address  Bank name & account number needed for this too

9 Generous Offer  Following offer open to all students in class: I will trade $0.16 for your next signed paycheck  My offer is VERY serious with contract ready  Probably not high quality, expensive type of check  Without additional value, you will end up richer

10 Why Not?

11

12 Patterns In Real-Life  Usually worth more than their components  They are both implementations of proxy pattern  Checks are remote proxies, but in the real-world  See working of virtual proxy with old U.S. currency  Consider definition of the word "Proxy" Ally or friend whom you give power to work as if they were you; Agent;Substitute

13 Remote Proxy in Action  Signed check is deposited into your account  Client sees bank give them cash, but more needed  To get cash, bank must follow several steps  Image of useless paper made at local bank branch  Bank then has image sent to local clearinghouse  Request routed to source bank for approval  Other bank has check amount deducted from account  Approval sent to clearinghouse as electronic transfer  Clearinghouse has result sent back to your bank

14 Remote Proxy Example

15

16 Remote Proxy Picture

17 Virtual Proxy  Silver & gold standard currency virtual proxies  Bills still (nearly) worthless paper & ink creation  Fed reserve banks kept vaults of gold and silver  Trade for bill for gold/silver at any of these banks  This is simpler proxy, no 3 rd party needed!

18 For Next Class  Lab due Friday before noon  Still have 1 hour!  Last lab available now on Angel  Continue reading on our last design pattern


Download ppt "Computer Science 313 – Advanced Economic Topics. Is This a Check or Money?  Currency issued by Bank of the United States  Once we figure that out: how."

Similar presentations


Ads by Google