Question

What are the functions of the mother board in a computer ???

Answer 1

Very similar to the upper spine of the human: it essentially provides connectivity for all the different "body parts".

The memory, the CPU, the hard drives, the graphics card etc. are all inserted into SOCKETS on the motherboard; these sockets are then connected using an intricate maze of wires (printed conductive metal).

The motherboard also has a battery on it which lasts couple of years and makes sure that a relatively primitive computer chip called CMOS does not lose vital information about your computer's setup and about system time and date. Very ancient PCs did not have this functionality and you actually had to enter the date and time every time you switched them on.

When you turn on a computer, this primitive CMOS chip triggers the BIOS - Basic Input/Output System - which starts waking up individual parts of the computer, loads the configuration (such as which of the potentially several hard drives should be considered as first for loading the operating system), and then, at long last, it tries to start the operating system by reading a short sequence of data from specific parts of the hard drive (or other data storage devices).

If I were to try to make an analogy, I'd say that this is something like when medical professionals try to wake someone who is unconscious - they check the pulse and breathing, then they may try things like gentle slaps on the face (this is very close to how BIOS touches different parts of the computer, making sure they are OK, and then tries finding OS loaders at data storage devices).

Answer 2

mother board in acomputer is main circuit bord of computer that lies inside the system unit it helps as all components of computer system including RAM ROM are either fixed or printed into the motherboard expansion slots were also fixed here.