The book opens a magic miniature world of electronics to the reader. The book addresses what small means in terms of electronics and what clean means in terms of modern electronic technology. Consequently, the reader understands why the most advanced civilization of the ancient world – the Egyptians – was not capable to do electronics. The book also discusses functionalities of the low-voltage electronic components with the aim to implement them in electronic circuit design. At the same time, it also opens the space of electronic component design to the readers be it discrete or integrated. The book has an introduction section, 11 chapters, an appendix, index, and list of literature. Appendix A discusses a set of solved problems, Appendix B presents SPICE simulation examples, and Appendix C presents component numbering in marketing environment.