Dewey Decimal System (library classification)

The Dewey Decimal System is a method used in libraries to organize books by assigning each a number based on its subject. These numbers, called Dewey Decimal numbers, are divided into ten main categories, covering areas like science, history, technology, arts, and literature. Within each category, books are further sorted into more specific subcategories, making it easier to locate and browse related topics. This system helps librarians efficiently manage collections and helps readers find books quickly by subject. Overall, it creates a structured, logical arrangement that simplifies access to knowledge.