Smart card category

Smart card category
The principle behind smart cards mainly involves using microelectronic technology as semiconductors for information storage. This microelectronic technology plays a crucial role in the future development of smart card technology. Smart cards are mainly divided into super smart cards, CPU cards, and memory cards. Based on these categories, let me explain them one by one.

1. Super smart cards, equipped with an MPU and memory, and equipped with a keyboard, LCD display, and power supply; some cards also have fingerprint recognition devices. According to data read/write methods, smart cards can be further divided into contactless IC cards and contactless IC cards:

2. Contact IC cards: the former involves contacts on the read/write device contacting the card's contacts for data reading and writing; The international standard ISO7816 series specifies this type of IC card.

3. Contactless IC cards, which have no circuit contact with the reading and writing devices and are read and written using contactless technologies (such as optical or radio technology). Its embedded chip is not only the storage unit. In addition to control logic, an RF transceiver circuit was added. These cards are generally used in situations where frequent access and reliability requirements are particularly high.

4. CPU card: The CPU card has an embedded chip equivalent to a special type of microcontroller. In addition to the controller, memory, and timing control logic, it also includes an algorithm unit and control system. Because the CPU card has large storage capacity, strong processing power, and secure information storage,

5. Non-encrypted memory cards: their embedded chip is equivalent to a standard serial E2PROM memory. Some chips even add write protection for specific areas. These cards are convenient for information storage, simple to use, and inexpensive. They can replace magnetic cards in many cases, but since they do not have information confidentiality features, they can only be used in applications where confidentiality requirements are not high.

6. Encrypted memory cards: The encrypted memory card embeds a chip outside the storage area with added control logic. Before accessing the storage area, the password must be verified. Only with accurate passwords can access and operations be performed. This type of information is more confidential and is similar to ordinary memory cards.

In summary, smart cards can mainly be divided into super smart cards, CPU cards, and memory cards. Based on the method of reading and writing, they can be further divided into contactless IC cards and contactless IC cards. There are many types of smart cards. If you have any needs, you can also contact Dejian Intelligent, a professional smart card manufacturer, who will definitely meet your needs.