related topics
{system, computer, user}
{math, number, function}

Microprocessors via one of:

Main memory via one of:

  • Slots
  • Sockets for external chips (on old motherboards)
  • Direct soldering of individual chips (on special purpose motherboards)

Peripherals via one of:

Expansion cards via one of:

A motherboard is the central printed circuit board (PCB) in many modern computers and holds many of the crucial components of the system, while providing connectors for other peripherals. The motherboard is sometimes alternatively known as the main board, system board, or, on Apple computers, the logic board.[1] It is also sometimes casually shortened to mobo.[2]



Prior to the advent of the microprocessor, a computer was usually built in a card-cage case or mainframe with components connected by a backplane consisting of a set of slots themselves connected with wires; in very old designs the wires were discrete connections between card connector pins, but printed circuit boards soon became the standard practice. The Central Processing Unit, memory and peripherals were housed on individual printed circuit boards which plugged into the backplane.

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