The motherboard is the main component inside the case. It is a large rectangular board with integrated circuitry that connects the rest of the parts of the computer including the CPU, the RAM, the disk drives (CD, DVD, hard disk, or any others) as well as any peripherals connected via the ports or the expansion slots.
Components directly attached to the motherboard include:
- The central processing unit (CPU) performs most of the calculations which enable a computer to function, and is sometimes referred to as the "brain" of the computer. It is usually cooled by a heat sink and fan.
- The chip set mediates communication between the CPU and the other components of the system, including main memory.
- RAM (Random Access Memory) stores all running processes (applications) and the current running OS.
- The BIOS includes boot firmware and power management. The Basic Input Output System tasks are handled by operating system drivers.
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