Another name for a motherboard.

The primary circuit board inside a PC.  The CPU, memory and all expansion peripherals plug into the mainboard.  Also called a Systemboard or Motherboard.

The mainboard, commonly called the mother board, is the central board of the computer, where all the main connection ports are mounted. It houses the buses between the main components. On the mainboard, there are usually controllers for parallel ports, serial ports, PS/2 port, floppy drives and hard drives. This is part of the hardware. See inside the case.

A large circuit board that holds RAM, ROM, the microprocessor, custom integrated circuits, and other components that make a computer work. It also has expansion slots for host bus adapters and other plug-in boards.

See motherboard.

This is the printed circuit board which is the heart of a computer. It contains the CPU, RAM, and BIOS. All the other devices and peripherals plug into it, or into an adapter attached to it.