The DB25 is a type of electrical connector commonly used for data communication and video signals. 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. DB25 connectors can support various protocols, including RS-232 for serial communication and IEEE 1284 for parallel connections. Although largely replaced by more modern interfaces like USB and HDMI, DB25 connectors are still relevant in some legacy systems and industrial applications.