Selectable data readout IC card

Details Selectable data readout IC card Selectable data readout IC card

1986-07-30

1989-01-10

Leung, Philip H.

Registers

Records

Conductive

235494, 235380, 250569, G06K 500

Patent

active

047975431

ABSTRACT:
An IC card has at least a CPU and a memory unit having a plurality of storage areas allocated therein and can write or read information. The IC card includes an indication unit which indicates if the information written in the storage area is the information to be subjected to an updated information readout for reading only the latest information or the information to be subjected to a history information readout for reading the information written in the storage area, sequentially in a predetermined order. In accordance with an indication by the indication unit, a selective readout of the information in the storage area is possible between the updated information readout and the history information readout.

REFERENCES:
patent: 4268744 (1981-05-01), McGeary
patent: 4319131 (1982-03-01), McGeary et al.
patent: 4575621 (1986-03-01), Dreifus
patent: 4680459 (1987-07-01), Drexler

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