For example, the CD attached with the book is the CD attached with the book, which is the attachment of the book.
The CD attached to the book is attached to the book, which has the characteristics of digitalization, integrates words, images and sounds, and is a non-book resource to supplement the book content.
The CD attached to the book mainly has the following characteristics:
1. The CD attached with the book is the attachment of this book.
CD attached to books is different from non-book resources such as e-books and electronic periodicals. As an attachment of books, CD attached with books has obvious integrity with books. It is a supplement to books. Only by combining books with CDs can readers deepen their understanding of the contents of books and play an auxiliary role in learning.
2. The CD attached with the book has a large capacity and rich contents.
The contents of the CD attached to the book are varied, and the subject categories involve various fields, including program examples, source code, free software and so on. Attached with computer books; There are pictures and sounds of social science and art books; There are auxiliary teaching software attached to electronic engineering books. There are also electronic books, teaching CDs or demonstration courseware; And some reference manuals, explanatory documents, technical materials, etc.
3. CDs attached to books are easy to be damaged and difficult to circulate.
CD attached to books is an electronic document with optical medium, which is particularly afraid of squeezing, scratching and long-term strong light irradiation. Therefore, it needs to be sealed and dust-proof, and it is not easy to circulate. However, in order to ensure the integration of books and CDs, some university libraries put books and CDs in the circulation department for readers to borrow, which does not take into account the fragility of CDs attached to books. Long-term circulation of optical discs is easy to cause scratches on optical discs, which eventually leads to the loss of optical disc data.
4. The CD attached with the book has strong timeliness and is out of date.
Most of the books attached to the library are books on computer, network, electronic engineering technology and other disciplines. Due to the development of science and technology, the half-life of such books is the shortest in all literatures, and the content is updated very quickly. Often many readers have not fully mastered a certain content, and there are "upgraded substitutes" for the content in the market. Therefore, this kind of CD attached with the book is easy to become obsolete and lose its use value.