step to be executed-enter the debit card
expected result-welcome screen should open
similarly many test cases can be formed on password and 
other funtionalities and screens of an atm machine

TC 1:- successful card insertion.
TC 2:- unsuccessful operation due to wrong angle card insertion.
TC 3:- unsuccessful operation due to invalid account card.
TC 4:- successful entry of pin number.
TC 5:- unsuccessful operation due to wrong pin number
entered 3 times.
TC 6:- successful selection of language. 
TC 7:- successful selection of account type.
TC 9:- successful selection of withdrawal option.
TC 10 :- successful selection of amount.
TC 11:- unsuccessful operation due to wrong denominations.
TC 12:- successful withdrawal operation.
Tc 13 :- unsuccessful withdrawal operation due to amount
greater than possible balance.
TC 14 :- unsuccessful due to lack of amount in ATM.
TC 15 :- unsuccessful due to amount greater than the day limit.
TC 16 :- unsuccessful due to server down.
TC 17 :- unsuccessful due to click cancel after insert card.
TC 18:- unsuccessful due to click cancel after insert card
and pin no.
TC 19:- unsuccessful due to click cancel after language
selection,account type selection,withdrawal selection, enter
amount

fault of atm machine

Some Test Cases on ATM Machine.

Insert the Card.
Please check the card inserted properly or not.
If the card inserted reverse.
If the card inserted correctly.
It will ask English, Hindi
Click on anyone means English or Hindi.
It will ask Pin Number.
If Pin number is correct, it will show some options like 
Withdrawl,Balance and so on......
If Pin number is wrong , it will ask again.
Now click on your choosen option.if your choice is 
withdrawl click on widhdrawl 
it will ask amount.
it check the balance your amount against the enter amount.
if it is greater than your balance, it will show error 
message.
if it less than of your balance,it will ask do you want 
receipt of this transactinon ? Yes or No
If you click on Yes..you will get receipt.
If you click on No..there is no receipt.
now you can collect your cash.
Again it will ask continue or exit.
Choise is yours.
If you click on Exit,your inserted card will come out and 
you will get also recipt.

thanks

dear friend r u explaining about test cases or the way to
use atm?

regards prasanthi