< All CompTIA A+ Notes

Raul | CompTIA A+ | Module 1.2 - Differentiate Between Motherboards

By: Raul Pop | Related Course: CompTIA A+ | Published: April 12, 2017 | Modified: April 12, 2017
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A bus is communication channel from motherboard.

1) Address bus

2) Data bus

3) Expansion Bus


32 BIT

64 BIT

Speed is measurable in MHZ.


CPU>Memory the > is address data bus

Then third bus is expansion going out IO/OU expansion cards



North Bridge


South Bridge

Input/Out Controller HUB


Connections Points with CPU

CMOS Battery

CMOS Memory

Store memory changes to BIOS



Motherboard has slots

plastic door package.

The cip with 2 sets of pins directly down in housing.

NotepadExpansion Slot


1) PCI

2) PCI-X

3) PCI-E

4) AGP Universal Slot

5) CNR

6) Memory Slots( Ram Cards)


NotepadIO/OU Ports

1) Mouse/Keyboard

2) Internet Cable/Wireless

3) Digital-Audio

4) VGA

5) CPU Slot

6) Memory Slot

7) PCI Slots

8) BIOS Slot

9) Several Pins jumpers


NotepadJumpers and Power

Jumpers-Small pins allocated around on motherboard

Power connector is going on motherboard

Different  cables for hard drive for cd..etc



Everything is connected to Motherboard

Motherboard-Computer Base



1) CPU

2) RAM

3) Different PC’S

4) Network

5) Audio

6) Video


ATX-Advanced tech extend

1) Expansions slots

2) Case opening

3) Etc.

4) Dual Channel Memory



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