Weak current College】 【smart card sorting】.

Smart card categories:

Smart cards are the core of smart card technology, performance and cost on smart card technology promotion and use of pivotal role, in order to improve the smart card's standardization and commonality, the International Organization for Standardization on smart card interfaces and communication protocols in detail, the production of smart card manufacturers have GEMPLUS, ATMEL, SIEMENS, MOTOROLA, MICROCHIP, and other companies.

Smart card belongs to semiconductor card. Semiconductor card information using microelectronics technology of storage and processing. According to its composition, the smart card can be divided into normal memory cards, encrypted storage card, CPU card and super smart card:

Non-encrypted storage card (MemoryCard)

Its embedded chip is the equivalent of ordinary serial E2PROM memory, some chips also adds a specific area of the write-protect feature, the card information storage convenience, using simple, inexpensive, many occasions alternative magnetic card, but does not have its own confidential information, therefore, can only be used for confidentiality are not demanding applications.

Encrypt the memory card (SecurityCard)

Encrypted storage card embedded chip in the store, increased control logic, before accessing the store needs to check the password, only the password is correct, you can access operation, the confidentiality of such information, use and similar to ordinary memory card.

CPU card (SmartCard)

CPU card embedded chip corresponds to a special type of microcontroller, internal memory with a controller, but the timing control logic, etc., but also with the algorithm and the operating system, CPU card with large storage capacity, processing capability, the information store security. Therefore, widely used in information security requires a particularly high locations.

Super smart card

On the card with MPU and memory and is equipped with a healthy dish, LCD monitors and power, the card also has a fingerprint devices.

In accordance with the data read/write mode, smart cards can be divided into smart card and contactless IC card in two categories:

Contact-type IC card

The former consists of read-write device contacts and the contact points on the card, contacts for data reading and writing; international standard ISO7816 series for this type of IC card.

Non-contact IC card

The latter and read-write device no circuit contact, contactless read/write technology for read and write (for example, light or radio technology). Its embedded chips in addition to a storage unit. Control logic, increased RF transceiver circuit. These cards typically used in access frequently, particularly high reliability requirements. International standards ISO10536 series expounded on the non-contact IC card.

Classification in accordance with the data exchange format, smart cards can be divided into two kinds of serial and parallel:

Serial IC card

Smart card and external data exchange, data flow according to the serial input and output. Most of the current application IC card belongs to serial IC card class, serial IC card interface is simple and easy to use, the International Organization for Standardization (ISO) to develop the relevant standards.

Parallel IC card

In contrast with serial, parallel IC card IC card data exchange carried out in parallel, and thus can provide two benefits: one is to improve the speed of data exchange, under the conditions of an existing technology can significantly increase the storage capacity. The vendor also has exploration, and the product in use, but due to the lack of appropriate international standards, large-scale applications there are still some problems.