What is a smart card?

A smart card is a plastic card the size of a credit card with an integrated circuit. Smart cards are integrated circuits the size of plastic cards and credit cards. In the case of a memory card, the integrated circuit may consist only of EEPROM, or it may also contain ROM, RAM and even CPU. This may be the only integrated circuit EEPROM in this kind of memory card, and it may also contain optical disk memory or even CPU.

Most smart cards are designed to have the look and feel of a credit card or debit card, but they can function on at least three levels (credit-debit-personal information). Most smart cards are associated with credit cards or debit cards, but at least on three levels (credit cards, debit cards and personal data). . The smart card includes a microchip as a central processing unit, a random access memory (RAM) and a data memory of about 10mb, wherein the smart card chip serves as the central processing unit, the random access memory (RAM) and the data memory of about 10MB.

Smart card is a kind of microcomputer without display screen and keyboard. A smart card contains a microchip with an integrated circuit, which can process and store bytes of electronic data. Smart cards contain the processing power of integrated circuit chips and thousands of bytes of electronic data storage. Due to the portability and size of smart cards. Is regarded as the next generation of data exchange. Because of their size, smart cards are regarded as the next generation of data exchange.

Just like a personal computer, a smart card contains an operating system. Smart cards contain personal computer operating systems. Smart cards can store and process information and are completely interactive. Smart cards can store and process information. Totally interactive. Advanced smart cards also contain a file structure with keys and encryption algorithms. Advanced smart card also includes file encryption algorithm and key structure. Because of the encrypted file. In the system, data can be stored in a separate file completely safely. Because of the encrypted file system, data can be stored in all files.

The organization is trying to migrate to this technology. The days of a single host for all-round computing are numbered. Ve。 Every instruction of the computer mainframe ran out of luck. Today, the delegation of tasks is transferred to small and dedicated smart cards. The task of the delegation today is to make it smaller. However, special smart cards. Partly because of their portability and ease of use, they may soon surpass standard computers in various applications. Its practicality may soon exceed the standards of various computer applications, in part because they are easy to carry and use.

Smart card is an electronic recording device. Smart card is an electronic recording device. The information in the microchip can immediately verify the identity of the cardholder. Privileges that cardholders may enjoy. Information can instantly verify the identity and privileges of cardholders, and cardholders can enjoy it. Information such as withdrawals, sales and bills can be processed immediately, if/when needed; I think the records can be sent to the central computer for file update. Information such as withdrawal, sales, processing and billing can be obtained immediately when necessary; These records can be sent to the central computer for file update.

Smart card is a safe, compact and intelligent data carrier. Smart card is a safe, compact and intelligent data carrier. Smart cards should be managed as special computers that can handle, store and protect data bytes. Smart cards should be regarded as special computers that can process, store and maintain thousands of bytes of data. Smart cards have electrical contacts and a thin metal plate, near the center line of one side of the card. Smart cards have contacts and a thin metal plate with one side of the middle line on it. This dime-sized board is an integrated circuit (IC) chip, including central processing unit (CPU), random access memory (RAM) and nonvolatile data storage. The wool steel plate below is an integrated circuit chip (IC) with a central processing unit (CPU) and a random access memory (RAM). And nonvolatile data storage. The data stored in the smart card microchip can only be accessed through the chip operating system (cos), which provides a high level of data security. The chip whose data is stored in the smart card can pass the chip operating system (certificate of origin). Provides a high level of data security. This security takes the form of password, which allows users to access part of the memory of IC chip or encryption/decryption measures to convert the bytes stored in the memory into useful information. This safe way to obtain the user's password allows the memory of some IC chips or encryption/decryption measures to be converted into useful information and stored in the memory.

Smart cards usually store 2000 to 8000 electronic bytes of data (equivalent to several pages of data). Smart electronic cards usually store 2000 to 8000 bytes of data (equivalent to several pages of data). . Because these bytes can be electronically encoded, the effective storage capacity of each card is significantly increased. Because these bytes can be encoded electronically, the effective water storage capacity of each card is greatly increased. Magnetic stripe cards issued by banks and credit card companies lack the security of microchips, but they are still not popular because they are single-purpose cards. Such as banks and credit card issuing companies, but lack of security, because the chip is used as a single-purpose card, it is still very cheap. Smart card can be used as a carrier of various records for various purposes. Smart cards can transmit multiple records for multiple purposes. Once these goals become aphorisms. Smart cards are generally regarded as advanced, ultimate and cheaper. Once these goals are to maximize smart cards, it is often seen as an advantage. And it's cheap in the end. The distributed processing of smart cards reduces the demand for large computers and the local and remote costs. The Ace telephone circuit needs to keep online connection with the central computer. The distributed processing of smart cards may need to reduce the number of larger and larger computer hosts and sacrifice local and long-distance telephone lines to maintain the central computer connection on the Internet.

Smart card is defined by ISO 78 16 standard. Smart card refers to the international organization for standardization standard 78 16.

Smart card applications for smart card purposes

Smart cards are as widely used as any microcomputer. Smart cards can be used in any multifunctional microcomputer. For example, in the hospital emergency room, this card can identify the patient's health insurance company and transmit all the necessary information from the microchip to the admission form. Take the hospital emergency room as an example, the card can identify people's health insurance and transfer all necessary information carriers from the chip to the circuit board. Use this card to process tests, treatments, bills and prescriptions more quickly. Treatment prescriptions and bills can be processed faster. Major clinical findings can be added to the medical information section of the microchip. The main clinical manifestations can be enriched to the medical information chipset.

In the United States, smart cards are used in GSM mobile phones, DIRECTV and Echostar satellite receivers, and American Express Blue Card. In the United States, GSM mobile phones use smart cards, and Coase DirectV satellites receive American Express cards and Blue.