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QUESTION: Dear Prof Scott

http://en.wikipedia.org/wiki/Automated_teller_machine

http://en.wikipedia.org/wiki/Coin

Assuming that $50, $100 are manufactured as coins then can ATM Machine accept (input) and output to the Customer who wants to withdraw money in the forms of coins ?.

Awaiting your reply,

Thanks & Regards,

Prashant S Akerkar

ANSWER: Yes, I am sure that the machines can do whatever is programmed, but it would take an invest-ment to make them operate with coins as well. As far as I know, the machines currently op-

erate only in bills. When they first started, they only used 20's, but perhaps more have been added.

Now I'm sure it could be done, but to produce an ATM machine like this would require more in-vestment than is currently put into them. As noted here, making them use any bill smaller than twenties at the moment is too expensive so it is not done.

See, almost anything can be produced. The true question is this: Is it worth it?

I mean, a machine could be made to go around a school yard and pickup jump ropes,

but the cost would be greater than the benefit.

For another, a machine could be made to paint the streets by itself with only one person watch-ing it, but again, the cost would be to high.

As one more example of what would cost too much, how about a robot to clean out the dishwasher?

It most likely could be done, but it would be far to expensive.

---------- FOLLOW-UP ----------

QUESTION: Dear Prof Scott

Thank you.

Here the challenging aspect would be segregation of coins value kept in the ATM Machine ?. i.e. Rs 1, Rs 10, Rs 50, Rs 100, Rs 500, Rs 1000, RS 5000 etc in coins similar to paper notes currency.

There could be two drawers within ATM machine one each for paper currency notes and one for coins ?.

If a customer wants to withdraw money from ATM Machine, Then there could be output of notes and coins both, only notes, only coins.

Awaiting your reply,

Thanks & Regards,

Prashant S Akerkar

At some banks, I have seen machines for dividing coins into the appropriate slots.

This could be done in the same way for coins that were for dollars.

On the old recognition system, they would just have to make each coin have a different size.

The best way would be to make them bigger depending on the value.

With the computers, however, each coin could be made the same size with some distinctive code for the value of them. They should also be of differing colors. The colors of the flag In the United States (and also England) are red, white, and blue. This might mean Rs 1 would be red, Rs 10 would be white, Rs 50 would be blue, Rs 100 Would be white with a red center, Rs 500 would be blue with a red center, Rs 500 would be white with a blue center, Rs 1000 would be red with a white center, and Rs 500 would be red white and blue.

As far as the computers go, they could all be made to be the same size, but they could each have some marking put in them to distinguish them from each other. With the computers we have today, this could be done by perhaps a differing thickness, how rough the edge was, how oval they were made, or any other way that can be thought of. Perhaps the higher the value of the coin, the more oval the coin would be. I'm sure the people making them would be able to think of something.

Then again, with the computers today, they could be designed just to recognize the color difference of the coins.

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Comment | Dear Prof Scott Thank you. Thanks & Regards, Prashant S Akerkar |

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