How does the connector interconnect hierarchy work?

I. How is the interconnection hierarchy of connectors? Due to the increasing diversity of connector configurations and the emergence of new structures and application areas, attempts to solve the classification and nomenclature problem with a fixed model have become difficult to adapt. Nevertheless, some basic classifications remain valid. According to the function of internal and external connections of electronic devices, interconnection (interconnection) can be divided into five levels. ① Internal connection of chip package ② Connection of IC package pins to PCB. Typical connector IC socket. ③ printed circuit and wire or printed board connection. Typical connector printed circuit connector. ④ The connection between the base board and the base board. Typical connectors are cabinet connectors. ⑤ Connection between equipment and equipment. Typical products are circular connectors.

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