Imagine what it would be like without the connector. At this point, the circuits should be permanently connected together with continuous conductors. For example, if you want to connect an electronic device to a power source, the ends of the connecting wire must have some method (such as soldering) to hold the electronic device and power source together. No matter be producing like this or use all brought a lot of inconveniences.
Take car batteries, for example. Assuming that the battery cable is fixedly welded to the battery, installing the battery in the car factory will increase the workload, production time and cost. When the battery is damaged and needs to be replaced, the car must be sent to the maintenance station, the old one must be removed by desoldering, and the new one must be welded, which requires more labor costs. With connectors, a lot of trouble can be avoided. Just buy a new battery from the store, disconnect the connector, remove the old battery, install a new battery, and reconnect the connector. This simple example illustrates the benefits of connectors. It makes the design and production process more convenient and flexible, and reduces production and maintenance costs.