A Computer Motherboard is commonly known as Main board or MB or System board or logic board is designed on PCB (Printed Circuit Board).That holds or connects all components and parts together on a single sheet. The Computer Motherboard holds all the circuitry to connect the various components of a computer system. Therefore it is also called as backbone of Personal computer system.

1. WELCOM TO
What is Motherboard?

2. What is Motherboard |
Definition Uses and Functions
• A Computer Motherboard is commonly known as Main board or MB
or System board or logic board is designed on PCB (Printed Circuit
Board).That holds or connects all components and parts together on a
single sheet. The Computer Motherboard holds all the circuitry to
connect the various components of a computer system. Therefore it is
also called as backbone of Personal computer system
• The Main board or Motherboard is the main crucial and important
part of the computer system. It holds many important components such
as computer memory slots,cpu,sata IDE slots, expansions slots(PCI,AGP
etc),capacitor’s, resistor’s ,BIOS chip etc. The Computer main board is
made up of thin sheet of non conductive material from plastic .The traces
which are present on the motherboard is made up of copper/aluminum
foil.
There are many companies which manufacture excellent quality of logic
boards these day's such as Intel, Asus, Gigabyte,Msi, Asrock, Sapphire
technology, Biostar etc

3. Computer Motherboard
Label Diagram

4. Components and parts Used
in Computer Motherboard
• There are various component embedded in MB/PCB(Printed
Circuit Board).You should know the basic computer
functionality and uses of the various component attached to
main board to use it and installed in Computer case.
• Today Computer Motherboards comes in number of variety
but the basic functionality and uses are pretty much the same?
You must be familiar with the use and aware of the basic
architecture of PC and Laptop motherboard design
• As it is difficult to understand each and every part of MB still
you should be aware of some common and important
component & parts attached to it.

5. List of component of PC
Motherboard
• Expansion slots (PCI
Express, PCI, and
AGP)
• 3-pin case fan
connectors
• Back panel connectors
• Heat sink
• 4-Pin (P4) power
connector
• CPU Socket
• Screw hole
• Memory slot
• Floppy connection
• ATA (IDE) disk drive
primary connection
• 24-pin ATX power
Supply connector
• Serial ATA
connections
• Coin cell battery
(CMOS backup
battery)
• System panel
connectors
• Serial port connector
• USB headers
• Jumpers
• SPDIF
• Game port and MIDI
header
• Internal speaker
• Keyboard controller
• Parallel port header
• PS/2 header

6. PC Motherboard Component
and Their Features
Ps/2 Mouse Port Ps/2 Keyboard Port
• Ps/2 Keyboard
Connector
• Circular In Shape
• 6 Pins
• Female Type Of
Connector
• Usually Voilet In
Colour
• Ps/2 Mouse
Connector
• Circular In Shape
• 6 Pins
• Female Type of
Connector
• Usually Green In
colour

7. Serial Port Display Port
• Display /VGA Port
• D -Type Of
Connector
• 15 Pins
• Female Type Of
Connector
• Usually Blue In
Color
• Serial / Normal
Mouse Connector
• D-Shape Connector
• 9 Pins
• Male Type
Connector
USB Port
• USB Stands For
Universal Serial Bus
• You can Connect any
USB Devices to this
connector
• Ex:
Pendrive,Scanner,Printer,Ca
rdreader
• Motherboard may contain
more than 2 USB Slot

8. Front Panel PCI Slot
• PCI (Peripheral
Component
Interconnect)
• You can connect
display
card,sound card
,lan card to this
slot
• Power
Switch
• Reset
Switch
• HDD Led
• Power led
Front USB
• Ground +,Ground -
• DT+ ,DT+
• DT-, DT-
• VCC+,VCC-

9. Complete Description of
Computer Motherboard
• The desktop or PC motherboard is mounted inside the
computer case with the help of small screws which are used to
tighten the system board into the computer case . The
computer case possess some pre-drilled holes so that the
screws can be easily fit into it.
• System or Main board consist of a single CPU socket which is
pre-soldered into it. There are various types of CPU socket
which are used to determine the computer motherboard and the
CPU which is compatible with it.
• Expansion slots are used in motherboard so that you can install
additional video cards, sound cards, and graphic cards into it.
These expansion slots are pre-install.

10. THANK YOU
SOURCES
http://www.chtips.com/motherboards/what-is-a-motherboard
http://www.chtips.com/motherboards/different-types-of-motherboard