How to identify and detect electronic components

How to identify and detect electronic components
First, the definition:
Electronic components are components of electronic components and small and small machines and instruments. They are often composed of several parts and can be used in similar products. They are often referred to as electrical, radio, instrumentation and other industrial parts, such as capacitors and transistors. The general term for sub-devices such as hairsprings and springs.
Second, identification:
Electronic components include: resistors, capacitors, potentiometers, tubes, heat sinks, electromechanical components, connectors, semiconductor discrete devices, electro-acoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro-motors , electronic transformers, relays, printed circuit boards, integrated circuits, various types of circuits, piezoelectric, crystal, quartz, ceramic magnetic materials, substrate substrates for printed circuits, electronic functional materials, electronic adhesives, electronic products Chemical materials and parts.
Third, testing:
Electronic components are fundamental elements in electronic circuits, usually in individual packages, and have two or more leads or metal contacts. The electronic components must be connected to each other to form an electronic circuit with a specific function, such as an amplifier, a radio receiver, an oscillator, etc. One of the common ways of connecting electronic components is soldering to a printed circuit board. Electronic components may be separate packages (resistors, capacitors, transistors, diodes, etc.) or groups of different complexity, such as integrated circuits (operating amplifiers, resistors, logic gates, etc.).
                          From Allicdata Electronic