computer

Friday, February 4, 2011

mother board

                                                                                                                        Mother board
Mother board, the printed circuit board (PCB),is the main circuit board in a computer.
The motherboard is also called the system board. it contains computer chips and other electronic component which give functions to a computer. it also contains a microprocessor, ROM, RAM slots, cache memory, keyboard interface,  the timing circuits, the real time clock circuit,  disk drive interfaces, and the expansion slots. these all components are connected through the use of buses. The pathway that carry data on the motherboard are called buses.
The  motherboard is the house of other circuit cards. None of the other circuit cards(daughter board or expansion  board)can work without motherboard. one can insert an expansion board like sound card ,3D-graphic card, TV-card in the expansion slot in order to expand the capability of a computer.
The  physical structure of the mother board has been changed over time but the logical structure has remained relatively constant.   

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