Electronics relies on highly specialized components such as transistors and integrated circuits. These devices can manipulate signals extremely quickly, some of them responding to signals billions of times per second. They are also extremely small. Manufacturers make millions of these tiny electronic components in pieces of material the size of a finger nail, called chips or microchips. The design and manufacture of tiny electronic components is often referred to as microelectronics or nanotechnology.
Electricity, a form of energy, is generated from the flow of electrons, or negatively charged particles. The number of electrons in an atom is usually equal to the number of protons (positively charged particles). When this balance is upset, for example, when two different surfaces rub against each other, the atom gains or loses electrons. The resulting free movement of the “lost” electrons generates an electric current.
About the Book
This book is for anyone who wants to learn basic electrical, electronics, and communications concepts without having to take a formal course. It can also be used as a classroom text. This third edition includes new content covering acoustics, audio, hi-fi, robotics, and artificial intelligence. It is recommended that you read this book from the beginning all the way through.
Hundreds of quiz and test questions are provided to reinforce your knowledge and track your progress. At the end of each chapter, there is a short multiple-choice quiz. You can (and should) refer back to the chapter texts when taking the quizzes. When you feel ready, answer the quiz, write down your answers, and give the list to your friend. Ask them to tell you their score, not which questions they got wrong.
The answers can be found in the back of the book. Concentrate on the chapter until you get most of them right. You are allowed to look at the text during the quizzes, so the questions are written in such a way that you really have to think before you write down your answers. Some of the questions are difficult, but there are no trick questions.
The book is divided into four major sections: DC,AC, Basic Electronics, and Advanced Electronics and Related Techniques. At the end of each section, there is a multiple-choice test. These tests a read ministered after each section is completed and take these tests after you have completed all of the quizzes in each chapter. When taking these tests, do not look back at the text. A satisfactory score is 37 correct answers. Answers are located at the end of the book.