How do you use an ATM card , Billy ?   It ’ s easy , grandpa . Insert you card into the machine here . Then wait a moment . OK . Now you enter your PIN . It should have four numbers .   Oh yes . I ’ Ve got it written down here . Just a minute .   You really shouldn ’ t write it down . You should memorise it . You can change it to a more convenient number if you like .   OK , I ’ Ve entered my PIN . There are several options on the screen . I guess I just choose which service I want , don't I ?   Yes . Choose the service you need to use . If you choose to withdraw money , the machine will ask you how much you want .   I can just enter the amount using the key , right ?   That ’ s right . Give the machine a moment to process you request . Then take your money .   These machines aren ’ t very difficult to use . In fact , I quite like them . They are much faster than dealing with a band clerk . 