The motherboard is your PC's main circuit board. Every part in your PC has access to this board by a direct connection or through some type of cable.

The motherboard is like a very complex freeway system. Many small pathways are etched on the surface which run from the CPU to all other parts of the motherboard.

Data and instructions travel throughout the motherboard from the CPU to other components, and back again. This complex freeway system is called the bus .