Which component allows different parts of a computer to communicate with each other?

The motherboard is the central component that facilitates communication among different parts of a computer. It acts as the main circuit board that connects the CPU, memory (RAM), storage devices, and other peripherals. The motherboard provides the necessary pathways, known as buses, that allow data to transfer between the components, enabling them to work together effectively.

In addition, it typically houses various connectors and slots for the CPU, RAM, and expansion cards (like graphics cards), as well as ports for input/output devices. By serving as a hub for information exchange among various components, the motherboard is crucial for the overall functionality and performance of a computer system.

Other components listed, such as the CPU, power supply, and hard drive, play significant roles in the operation of a computer; however, they do not serve the primary function of interconnecting all parts. The CPU processes instructions, the power supply provides electrical energy, and the hard drive serves as storage, but none of these enable communication between other components like the motherboard does.