How-To Geek


A motherboard is the main printed circuit board (PCB) found in computers and other expandable electronic systems. The term motherboard specifically refers to printed boards with the potential for future expansion (as the motherboard serves as the “mother” which hosts and supports the expansion cards). While the term motherboard has been adopted to refer to just about any main board, for applications where there is no expansion (such as the main circuit board in a washing machine), it would be more accurate to refer to the board as the system board or mainboard.

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