Yes they are... The motherboard is a large, square circuit board, containing lots of sockets. Expansion cards are rectangular circuit boards that slot into the sockets on the motherboard.
It is the motherboard.
The motherboard
Pci cards
Pci cards
the answer is the mother board of the computer
Expansion Boards
cards
The case of a computer has mounting brackets inside it, to this is attached a motherboard. installed on the mother board are various other circuit cards which aid in making the computer work. Other devices, such as; CD drives, hard drives and power supplies are installed in their own particular mounting bracket.
It is called motherboard because all the daughter cards are installed or placed in the mother board. So unless there is a motherboard, there is no role of daughter boards
A specification for extending the internal circuitry bus that transmits data from one part of a computer to another by inserting circuit boards. It allows the expansion of a computer by inserting printed circuit boards, or expansion boards, into sockets expansion slots inside the PCI bus. Full form: peripheral component interconnect.
Because it is the main circuit board in the computer that connect to all the other boards and component.
In a computer system, the motherboard holds all the other circuit boards. The video, sound, game ports, and all other daughter boards are attached to this important piece of hardware.