Barcode and Books
How a book is defined depends on when and how it was published. Many books do not have credentials. There are two common barmarks used in books. The four most common numbers are EAN (European branch number AKA International Article Number), ISBN (International Book Book Number), UPC (Universal Product Code) and Library of Congress Catalog Number. Of these numbers, only EAN and UPC can be displayed as bar codes.
Recent books should have EAN. There are two types in common use: EAN (which is 13 digits long) and EAN + 5 (18 digits). In the latter case, the last 5 letters code the currency and the price. EAN is often inside the front of the book.
The first part of EAN strikamerkis is EAN. The first three numbers are country code. If the first three numbers are 978 or 979, it tells us that this item is from "Bookland", which is the imaginary country from which all books come from. The next nine numbers are ISBN (International Standard Book Number) and Regulatory Authority. The second part of the bar code tells us the price. The first code is the currency, the other four are prices.
The International Standard Book Number (ISBN) was implemented in 1970. [The earlier Standard Book Number was used from 1966 to 1974]
ISBNs have either 10 or 13 digits. This is an example of ISBN: ISBN 0-812-50394-5
You can change 10-digit ISBN to EAN by adding "Bookland" prefix 978 and changing the last digit to a new checkbox. (No old ISBN is 979 EAN ISBN, it is not a ten-digit version. Only 13-digit EAN / ISBN appears as barcode, never 10-digit code. 19659005] In some books, the ISBN will be encoded with a two-storey barcode, similar to and US Postcode.
North American Books also use the UPC (Universal Product Code) system. (Always for older paperbacks) if it is a barcode, it will be the price point of UPC. The first chapter is UCC (Company Code) The last part is a part number. Unfortunately, when the price changes, UPC changes. In technical terms, this system is "very stupid!" As of January 1, 2007, its use was discontinued, but there are many books there outside with this type of barcode.
You can recognize the UPC price by the price-in-center feature. A small 5-digit addition also includes a part of ISB N. See the pricing of UPC behind the book, check if it has EAN as well. (EAN is often inside the front of the paper) EAN is much easier to work with.
About the barcode itself
EAN and UPC use the same barcode font. Each letter is given in four bars. The sticks can have one of four widths and both the dark and the light bars count. There are bar codes where the white space does not have information, in this case it is the case. If you connect the numbers 0-3 to each latitude width, you will find that each letter is 7. This is part of the wildcard search.
Both EAN and UPCs contain additional error statements in the form of a voice. This is the 12th digit in UPC and 13. in EAN.
Large retailers believe it's useful to create your own file system using bar codes related to numbers in the computer's computer, but not necessarily to the outside world. They can print a sticker with a barcode font that their computer understands, but nobody else can. Some of these barmarks look like EAN or UPC because they use the same font UUC128, some use completely different fonts and codes.
Non-barred book, how to add another
Look at the back of the title for ISBN. The International Standard Book Number (ISBN) was implemented in 1970. You can change the 10-digit ISBN to EAN by adding "Bookland" prefix 978 and changing the last digit to a new checkbox. http://www.isbn.org/converterret.asp does this for you. You can edit the ISBN in the EAN barcode and print it out. If you want to understand more, go to http://www.isbn.org/standards/home/index.asp
Older books can only be LCCN. This does not mean UPC, EAN or ISBN, and although the Library of the Assembly has an internet connection, it often only contains the number for the first issue of the book. LCCN is never barcoded.