Data bus components are electrical connectors used to transfer data and other signals between data bus systems. They are commonly referred to as DB contacts, and they are typically made up of several isolated pins, arranged in a specific configuration. DB contacts work by allowing electrical current to pass between two points on the contacting pins. The current enables a communication between devices, transferring data from one device to another. When two DB contacts are connected, a circuit is formed, allowing for an exchange of data between devices. DB contacts come in various sizes and configurations, depending on the type of data bus systems being used.