Personal computers use a number of chips mounted on a main circuit board. What is the common name for such a board?

The single large board that holds the processor, memory and expansion slots is commonly called the motherboard.

A daughter board is a smaller board that plugs into a larger one, not the main board.

There is no standard computing component called a father board.

A dashboard is a control or summary screen, unrelated to hardware boards.

The motherboard links every chip through its buses and connectors.

Add-on: smaller add-in boards attached to it are also known as expansion or daughter cards.