Question: A supermarket uses a computerised stock control system. This is part of the supermarket's stock file. Product number Product name Number_in_stock Reorder_level 5011476130069 Wheaters 185

A supermarket uses a computerised stock control system. This is part of the supermarket's stock file. Product number Product name Number_in_stock Reorder_level 5011476130069 Wheaters 185 130 0000208097939 Cricket Tea 152 120 0001570248867 Geo garden peas 212 185 It has EFTPOS terminals at each of its checkouts. (a) Write down the input devices used to read: (1) The product numbers of the goods bought by customers 11 (11) The customer's credit card details [1 (b) Name the validation check that would be carried out on the product number

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