According to the initials on the bar code, you can find it by comparing it with the schematic diagram of the library reading room.

Libraries generally encode books by adding bar codes to China Library Classification.

1. Using China Library Classification, you can give each book a number, that is, the classification number. Then, according to their own actual situation, each library adds the book number after the classification number, forms the call number together with the classification number, and sticks the call number on the books.

2. Stick the barcode on the title page of the book.

3. Put the books with call numbers and bar codes on the bookshelf in a certain order.

4. Enter the call number and barcode into the database system.

5. Coding is completed. Books can be borrowed at this time.