Is the mother board the mastermind of a computer?

Answer 1

No, the CPU is the brains of the computer and interprets instructions received, equivaqlent to your brain responding to stimuli and selecting a course of action to follow. An equivalent analogy for the motherboard would be your neurological system. The motherboard, like neurotransmitters, receives and transmits messages to and from input/output sources (keyboard, mouse, etc.) to the CPU.

Answer 2

The CPU (central processing unit) is the part that does most of the actual work (calculations), its speed and active memory among other factors will greatly influence the direct performance of your computer.

The motherboard is like a "doc" where all the "ships" (components) come to trade their "cargo" (information/data). It ensures that all other components of the computer communicate efficiently. It also houses the BIOS, the essential component for smoothly running the startup of the computer, as well as being in background control of some hardware (eg. fan speeds).