Jusar An key piano, with the octaves numbered and Middle C cyan and A4 yellow highlighted. Learn how and when to remove these template messages. Dummer presented the idea to the public at the Symposium on Progress in Quality Electronic Components in Washington and he gave many symposia publicly to propagate his ideas, and unsuccessfully attempted to build such a circuit in Many programming languages provide regex capabilities, built-in, or via libraries, the phrase regular expressions is often used to mean the specific, standard textual syntax for representing patterns that matching text need to conform to. Init published a multilingual international vocabulary to unify terminology relating to electrical, electronic and this effort continues, and the International Electrotechnical Vocabulary remains an important work in the electrical and electronic industries. Other early implementations of pattern matching include the SNOBOL language, which did not use regular expressions, Regular expressions entered popular use from in two uses, pattern matching in a text editor and lexical analysis in a compiler 5.

Author:Karr Kazir
Language:English (Spanish)
Published (Last):3 August 2006
PDF File Size:11.93 Mb
ePub File Size:4.15 Mb
Price:Free* [*Free Regsitration Required]

In computer science, extended Backus—Naur form EBNF is a family of metasyntax notations, any of which can be used to express a context-free grammar. EBNF is used to make a formal description of a formal language such as a computer programming language.

A magnetic stripe card is a type of card capable of storing data by modifying the magnetism of tiny iron-based magnetic particles on a band of magnetic material on the card. The magnetic stripe, sometimes called swipe card or magstripe, is read by swiping past a magnetic reading head. Magnetic stripe cards are commonly used in credit cards, identity cards, and transportation tickets.

A proximity card or prox card is a contactless smart card which can be read without inserting it into a reader device, as required by earlier magnetic stripe cards such as credit cards and contact type smart cards. The proximity cards are part of the contactless card technologies. Held near an electronic reader for a moment they enable the identification of an encoded number.

The reader usually produces a beep or other sound to indicate the card has been read. It can be used in information systems such as database applications. Such cards can normally be read out by a reader without being powered themselves, as the reader will supply the necessary power to the card over the air wireless. ISO is an international standard for financial transaction card originated interchange messaging. It is the International Organization for Standardization standard for systems that exchange electronic transactions initiated by cardholders using payment cards.

An ATM card is a payment card or dedicated payment card issued by a financial institution which enables a customer to access automated teller machines ATMs. ATM cards are payment card size and style plastic cards with a magnetic stripe or a plastic smart card with a chip that contains a unique card number and some security information such as an expiration date or CVVC CVV. ATM cards are known by a variety of names such as bank card, MAC, client card, key card or cash card, among others.

Most payment cards, such as debit and credit cards can also function as ATM cards, although ATM-only cards are also available. Charge and proprietary cards cannot be used as ATM cards. The use of a credit card to withdraw cash at an ATM is treated differently to a POS transaction, usually attracting interest charges from the date of the cash withdrawal.

Interbank networks allow the use of ATM cards at ATMs of private operators and financial institutions other than those of the institution that issued the cards. A card reader is a data input device that reads data from a card-shaped storage medium.

The first were punched card readers, which read the paper or cardboard punched cards that were used during the first several decades of the computer industry to store information and programs for computer systems.

Modern card readers are electronic devices that can read plastic cards embedded with either a barcode, magnetic strip, computer chip or another storage medium. A contactless smart card is a contactless credential whose dimensions are credit-card size. Its embedded integrated circuits can store data and communicate with a terminal via NFC.

Commonplace uses include transit tickets, bank cards and passports. An MM code is a "machine-readable modulated" feature that has been added to German debit cards during manufacture as an anti-counterfeiting measure since If a payment card contains an MM code as well as a magnetic stripe, any fraudster who counterfeits the card but fails to read and duplicate the MM code onto the copy will be detected when trying to use the counterfeit in a German automated teller machine.

A card security code CSC , card verification data CVD , card verification number, card verification value CVV , card verification value code, card verification code CVC , verification code, or signature panel code SPC is a security feature for "card not present" payment card transactions instituted to reduce the incidence of credit card fraud.

A national delegation of experts from various countries meet in person at WG1 to discuss and debate items detailed in a meeting agenda until a consensus is reached. These items include: draft standards, draft test methods, questions from the industry, proposals for new work items or other aspects relating to the Standards and Test Methods that WG1 bears responsibility for. WG1 meetings are usually held three times a year, typically at the beginning of March, the end of June, and at the beginning of October for a period of 2—3 days.

The October meeting is typically held in the days just prior to the SC17 Plenary and at the same location.


ISO/IEC 7813 ISO/IEC 7813の概要

Dim The maximum record length is 40 numeric digits e. A is often used as a iiso in just intonation regardless of the fundamental note or key. History At the time of the financial crisis, a single identification code unique to each financial institution was unavailable worldwide. Cost is low because the chips, with all ief components, are printed as a unit by photolithography rather than being constructed one transistor at a time, furthermore, packaged ICs use much less material than discrete circuits.


PDF Windows



ISO/IEC 7811


Related Articles