# Electronic Devices. Conventional Current Version by Thomas L. Floyd

By Thomas L. Floyd

Digital units (CONVENTIONAL present VERSION), 9th version, offers a superior origin in simple analog electronics and an intensive advent to analog built-in circuits and programmable units. The textual content identifies the circuits and elements inside a method, aiding scholars see how the circuit pertains to the general method functionality. Full-color pictures and illustrations and easy-to-follow labored examples help the text's robust emphasis on real-world program and troubleshooting. up to date all through, the 9th version positive aspects new GreenTech purposes and a brand new bankruptcy, "Basic Programming innovations for automatic Testing."

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BASIC PROBLEMS Section 1–1 The Atom 1. If the atomic number of a neutral atom is 6, how many electrons does the atom have? How many protons? 2. What is the maximum number of electrons that can exist in the 3rd shell of an atom? Section 1–2 Materials Used in Electronics 3. For each of the energy diagrams in Figure 1–21, determine the class of material based on relative comparisons. 4. A certain atom has four valence electrons. What type of atom is it? 5. In a silicon crystal, how many covalent bonds does a single atom form?

SUMMARY Section 1–1 ◆ According to the classical Bohr model, the atom is viewed as having a planetary-type structure with electrons orbiting at various distances around the central nucleus. ◆ According to the quantum model, electrons do not exist in precise circular orbits as particles as in the Bohr model. The electrons can be waves or particles and precise location at any time is uncertain. ◆ The nucleus of an atom consists of protons and neutrons. The protons have a positive charge and the neutrons are uncharged.

3. 4. 5. 6. What is a pn junction? Explain diffusion. Describe the depletion region. Explain what the barrier potential is and how it is created. What is the typical value of the barrier potential for a silicon diode? What is the typical value of the barrier potential for a germanium diode? SUMMARY Section 1–1 ◆ According to the classical Bohr model, the atom is viewed as having a planetary-type structure with electrons orbiting at various distances around the central nucleus. ◆ According to the quantum model, electrons do not exist in precise circular orbits as particles as in the Bohr model.