According to the different integrated circuits embedded in the IC smart card, the IC smart card can be divided into the following three categories:
1) Memory card: the integrated circuit in the card is EEPROM;
2) Logic encryption card: the integrated circuit in the card has encryption logic and ZEPROM;
3) CPU card: The integrated circuit in the card includes the central processor CPU, EEPROM, random access memory RAM and the on-chip Operating System COS (Chip Operating System) solidified in the ROM, strictly speaking, only the CPU card is the real smart card.