外文翻译---校园智能卡(编辑修改稿)

外文翻译---校园智能卡(编辑修改稿)内容摘要：

re discarded. EEPROM, which can be changed up to 100,000 times, includes builtin logic that can be used to update a. counter in prepaid service cards. Microprocessor Chip Curds These cards have on card dynamic data processing capabilities. The chip contains a microprocessor or a microcontroller that manages memory allocations and file access. It manages data in organized file structures, via a card operating system (COS). Unlike other operating systems, this software controls access to the on card user memory. Thi,s capability permits different and multiple functions and/or different applications to reside on tkle card. The microprocessor chips used for cards are smaller, slower versions of the central processing units used in PCs. Their pro,gamming capability provides support to functionality of the card. Microprocessor smart cards are required for applications that manipulate or pare data, such as public key infrastructure (PKI), dataencryption, Java applets, and electronic purses. Every microprocessor smart card bas a COS on the chip to operate the internal functions of the application. The COS loads off the readonlymemory (ROM), much like: a basic inputloutput system (BIOS) on a PC [Z]. 5 Contact Smart Cmds In addition to the classification of smart card based on the chip type, smart cards can be classified based on munication type. Contact smart card requires a phyriical contact between card and the reader. They use an eight or six pin contacts on the top of the card to physically connect to the card reader. Their could be memory or microprocessor type [5]. Contactless Smart Curds Contactless smart cards use an antenna to municate with the reader. They are powered from an RF field generated by the card reader. The RF field also transfers data between the card and the reader [4]. Employee identification badges for building access are typically contactless smart cards. Additionally, most cards used for transportation are contactless as well. Combination Smart Cards Multipurpose bination smart cards are a hybrid mix of the contact and contactless designs. They include contacts for munication with a contact type reader, and also include an antenna for munication with an RF type reader [5]. 4. KFUPM Smart Card System Universities need simple identity cards for all employees and students who are granted access to certain data, equipment and departments according to their status. Multifunction, microprocessor based smart cards incorporate identity with access privileges and also stores value for use in various locations, such as cafeterias and stores. Numerous universities around the world are utilizing smart cards. KFUPM is one of the first universities in the area to adopt a prehensive multifunctional smart card system. KFUPM card is a dual card that bas two chips。 one for contact applications and the other is for contactless applications. The contact chip will be utilized to store cardholder photo 6 in addition for future bank services while the contactless chip will be utilized for all other functions. The card systemwill provide the following functions: Photo ID Library borrowing privileges Electronic purse Recreation center sewices Medical center services ELeaming Access control to university facilities Logical access to PCs and the inter These functions are controlled from a control management center (C。