The motherboard is used to connect all the components of a computer together. The CPU, memory, hard drives, and other ports and expansion cards are all connected to the motherboard directly or via cables.
Motherboards explained
The motherboard is the hardware component of the computer that can be seen as the 'backbone' of the PC, or better said as the 'mother' that holds all the parts together.
Phones, tablets and other small devices also have motherboards, but they are often called logic boards. Their components are usually soldered directly to the board to save space, which means there are no expansion slots for upgrades like you see in desktop computers.
The IBM Personal Computer, which was introduced in 1981, is considered the very first computer motherboard (at the time it was called a "planar").
