What fields are connector generally used in?

Connectors are not only used in smart phones, computers and other items that are closely related to our lives, but are widely used in all electronic-related terminal equipment. Because the connector needs to deal with a variety of different design styles and uses, there are many types of connectors. What kind of connection effect will the use of the connector produce? Let's take a computer as an example. First, there are the memory slots. It is mounted on the PCB board in the computer case and is used to connect to the memory card slot. Secondly, it is a connector used for the internal PCB board of the computer. The circuit consists of multiple PCBs according to different functions. Connectors are required to connect these PCBs. In addition, the LCD screen and the keyboard also need to be connected to the PCB using connectors. There are also IO connectors at the back. This is a connector used to connect the host computer and printers, mobile devices, televisions, etc. with external devices. In addition, there are card socket connectors for connecting various cards, such as SD card sockets.