What kind of electronic component is this and what is it for?

Electronic components are various components used in electronic circuits, including resistors, capacitors, inductors, diodes, transistors, integrated circuits and so on. Their role is to control and transmit electrical signals to achieve a variety of functions of electronic equipment. There are a wide variety of electronic components, and all of them have their own characteristics and applications. For example, resistors can be used to control current, capacitors can be used to store electricity, diodes can be used to realize rectification, transistors can be used to amplify electrical signals and so on. Electronic components are the basis of electronic technology, is the key component of electronic equipment and electronic products, widely used in computers, communications, television, audio, automotive electronics, medical equipment and other various fields.