Need to know:
The library numbers books for unified management, for example, the number is 123456789, and then input, and its corresponding number is 123456789, which is generated by a bar code generator and pasted on books.
When the Xinhua Dictionary is returned, the library staff will use the barcode scanner to illuminate the barcode, and the computer will display 123456789. The related entry is Xinhua Dictionary.
Another batch of library books are compiled for the convenience of book classification. There are a large number of books in the library every day, and it is impossible for the staff to place them according to their names. Generally, they are arranged by numbers.