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Electronic components are the basic components combined together to make complete electronic products. Understanding the functions, types, structures, and properties of commonly used electronic components is fundamental to understanding electronic technology.

Passive components are components found in electronic products that consume rather than generate energy, such as resistors, capacitors, and inductors. Trillions of these common basic components are manufactured every year. They are cheap to manufacture, and can be produced using a large variety of materials. Most are general-purpose types, but some are specially designed for niche markets.