What does isbn mean?

The International Standard Book Number (ISBN) is an international number specially used to identify books and other documents. ISO promulgated the ISBN international standard in 1972, and set up the international ISBN center in the Prussian Library in West Berlin, which is the management institution for implementing the standard.

At present, publications using ISBN coding system include: books, pamphlets, microforms, Braille printed matter, etc.

Extended data:

Inspection method

According to ISO-2 108, the parity bit generation is calculated by the coefficient 1 1. The calculation method is to multiply the first nine digits of ISBN by numbers from 10 to 2 in turn, add the products, and divide the sum by11; If there is no remainder, the check number is "0"; If there is a remainder, subtract it from 1 1 and the difference is the check number. If the difference is 10, it is represented by an "x" representing the Roman numeral 10.

References:

Baidu encyclopedia-international standard book number