what is Hardware?
There are many different kinds of hardware that can be installed inside, and connected to the outside, of a computer.
The motherboard serves to connect all of the parts of a computer together.
The cpu, memory, hard drives, optical drives,video card,sound card and other ports and expansion cards all connect to the motherboard directly or via cables.
The motherboard is the piece of computer hardware that can be thought of as the "back bone" of the PC.
the picture on the right is a picture of a labelled motherboard of a raspberry pi.