The DB-25 is a type of electrical connector commonly used for data communication and video applications. It features 25 pins arranged in two rows and is often found in older computer systems, printers, and other peripherals. The "DB" in its name refers to the connector's shape, which is a D-subminiature design, while "25" indicates the number of pins. This connector is typically used for parallel and serial communication, making it versatile for various devices. While newer connectors like USB have largely replaced the DB-25 in modern technology, it remains relevant in specific legacy systems and applications, such as RS-232 serial connections.