Six copies. According to the electronic library of Chemical Industry Press, the zero-starting graphic electronics series includes zero-starting graphic electronics (1 edition), zero-starting graphic electronics (2nd edition), zero-starting graphic electronics (3rd edition), zero-starting graphic electronics (4th edition) and zero-starting graphic electronics (5th edition). This set of books explains the basic knowledge of electronic technology from scratch, as well as the basic composition of electronic components, the basic principle of circuits, the composition of circuits, the analysis of circuits and the design of circuits. In an illustrated way, it aims to help readers master the basic knowledge of electronic technology and lay a solid foundation for studying electronic technology in the future.