Motherboard
From Wikipedia, a free encyclopedia written in simple English for easy reading.
Mother board=mainboard is a centre of all PC. Main Boards include: sequence switchs - parts witch is coordinationing all computer parst to work on same cps. BIOS CMOS slots(sockets) to connect all next parts of PC - PCI, AGP, Procesor, operation memory(called as RAM), cable to drives(HDD, CD, DVD) - usually SCSI or IDE.)
MB (as all pc parts) is quickly changing 4 exampe: In former times existed card to PCI whitch includes USB, now MB includes USB theyself.