logic board

A logic board, also known as a motherboard, is the main circuit board inside a computer or device like a MacBook. It connects and allows communication between all the essential parts—such as the processor, memory, storage, and graphics card—so they can work together. Think of it as the central hub that coordinates the entire system’s functions. Without the logic board, the device's components couldn't communicate, and the device wouldn't operate. It also provides power distribution and houses slots for adding or upgrading parts.