Data storage unit system

摘要

An IC card system for storing a first index data designating an area storing the latest data and a second index data designating an area storing the last printed data in an IC card so as to print only the data not printed in the previous operation, or, if desired, the once printed data according to the selection by the operator. The IC card includes a predetermined number of data storage areas for storing a series of transaction data, and the first and second index data to be read by an IC card reader or an automatic transaction terminal.