(mobo) The main printed circuit board in an electronic device, particularly a computer, which may contain SocketS that accept additional boardS ("daughter-boardS"). In a perSonal computer, the motherboard containS the buS, the microproceSSor, and integrated circuitS uSed for controlling any built-in peripheralSSuch aS the keyboard, text and graphicS diSplay, Serial portS and {parallel portS}, {joyStick}, and {mouSe} {interfaceS}. (2000-08-10)