Main Board
The official motherboard definition is that it's the main printed circuit board within a computer, which means it's the primary piece of circuitry that all of the other pieces plug into to create a cohesive whole. ... Without it, none of the computer pieces, such as the CPU, GPU, or hard drive, could interact. The definition of a motherboard is an insulated board within an electronic device into which circuits or wires are connected and plugged. An example of a motherboard is the main board in your computer that contains the circuitry for everything required for you to type the words on your keyboard. A motherboard is also known as the system board or the main board. The motherboard accommodates the central processing unit (CPU), random access memory (RAM), expansion slots, heat sink and fan assembly, basic input/output system (BIOS) chip, chipset, and the circuitry that interconnects the motherboard components.
In computing, the form factor is the specification of a motherboard – the dimensions, power supply type, location of mounting holes, number of ports on the back panel, etc. ... Traditionally, the most significant specification is for that of the motherboard, which generally dictates the overall size of the case.
