The last 10 digit belongs to the international standard book number and can be divided into three number segments, and 7 107 190056 can be divided into three number segments.
The first number field is the area code, which consists of 1~5 digits, and 7 stands for China publications.
The second paragraph number is the publishing house code, which is assigned by the ISBN center of the country or region to which it belongs, and the allowable value range is 2~5 digits. The bigger the publishing house, the more books it publishes, and the smaller the number.
The book serial number (title identifier) is given by the publishing house itself, and the book serial number of each publishing house is fixed. The shortest one and the longest six. The bigger the publishing house, the more books published and the longer the serial number.
The tenth digit is the parity bit of the electronic computer. Fixed one digit, automatically generated by the first twelve digits.
Extended data:
ISBN code management system
The management of ISBN system is divided into three levels: international ISBN management organization (international ISBN center), ISBN group management organization and publisher.
1. The international ISBN management organization manages the regional management organizations of each group through the setting and allocation of group numbers.
2.ISBN group management organization manages each publisher by setting and assigning publisher numbers.
Publishers directly manage their publications by issuing serial numbers.
The international ISBN management organization joins the EAN UCC system on behalf of ISBN users all over the world. ISBN users only need to accept the management within ISBN system. Through the three-level management of international ISBN management organization, ISBN group management organization and publishing house, each publication (including different forms of the same publication) is given a different code, which ensures the uniqueness of the code in the world.
China ISBN Center is a regional management organization established by the international ISBN system in China, which is responsible for the training, implementation, supervision and management of the Chinese standard book number system.
References:
Baidu encyclopedia-international standard book number