OPAC (Online Public Access Catalog)  is an equipment that enables searching for the library’s collection of books and other materials by searching for words such as book titles, author’s names, and keywords, etc. The system will provide a bibliography-style list of information resources, and also inform you whether the information resource is “borrowed” or “available”, including storage locations. The service users can search for books on their own, and also check the list of borrowed books and borrow them through the OPAC system.