Imagine what would happen if there were no connectors? The circuit is then permanently connected with a continuous conductor, such as the electronic device to be connected to the power supply, must be connected to the ends of the wire, and the electronic device and the power supply by some means (such as welding) to secure the bond. In this way, whether for production or use, has brought a lot of inconvenience. Take automotive batteries as an example. Assuming that the battery cable is fastened to the battery, the car production plant increases the amount of work required to install the battery, increasing production time and costs. Battery damage needs to be replaced, but also to take the car to the repair station, desoldering demolition of the old, and then welded on the new, to pay more labor costs. With a connector you can get rid of a lot of trouble, buy a new battery from the store, disconnect the connector, remove the old battery, put on a new battery, and reconnect the connector. This simple example illustrates the benefits of a connector. It makes the design and production process more convenient and flexible, reducing production and maintenance costs.