The document discusses safety practices for working with computer hardware. It advises turning off power when disassembling, installing, or cleaning hardware to protect oneself from electric shocks. It warns never to disassemble monitors or power supplies unless trained, as they can retain dangerous voltages even when unplugged. The document also provides an overview of the motherboard, describing it as the main circuit board that contains the CPU and connections for other components like RAM, storage drives, ports, and the power supply.

1. SAFTY
NOTES
1
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro

2. 2
Poor Safety Habits Can Harm Both
The User And The Computer!
 To protect both yourself and the computer:
 Make sure power is off when disassembling, installing or
removing hardware, or doing preventive maintenance (cleaning).
 Never disassemble the monitor or power supply unless you have
been specifically trained on these components.
 Monitors develop high voltage when turned on, and both
monitors and power supplies have capacitors (electronic parts
that hold an electrical charge) that can hurt you even if the power
has been removed.
 Effective use of computer terms means more than just knowing
and using the correct terminology, it also means using it
appropriately and explaining computer terms with simple,
everyday language and examples.
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro

3. MOTHER
BOARD
3
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro

4. 4
Motherboard
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro

5. The Motherboard
5
• Largest, most important circuit board
– Main board or system board
– Contains the CPU, expansion slots, other devices
• Motherboard component categories
– Processing, temporary storage, communication,
power
• All devices communicate with motherboard CPU
• Peripheral device links to motherboard via
cable
• Motherboard ports may be outside of the case
– Keyboard, mouse, parallel, USB ports, sound ports
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro

6. 6
Motherboard: Arial View
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
All hardware components are either located on the motherboard or directly or
indirectly connected to it because they must all communicate with the CPU

7. 7
Motherboard: Rear/Back IO Panel
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
A motherboard provides ports for common I/O devices
In the Rear or Back Panel

8. 8
Motherboard: FAN & Heat Sink
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
The processor is hidden underneath the fan and
the heat sink, which keep it cool

9. 9
Motherboard: RAM / DIMM Slots
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
A DIMM holds RAM and is mounted
directly on a motherboard

10. 10
Motherboard: IDE Cable Connector
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
Using a parallel ATA interface, a motherboard has two
IDE connectors, each of which can accommodate two
devices; a hard drive usually connects to the
motherboard using the primary IDE connector

11. 11
Motherboard
IDE Cable
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
This system has a
CD-ROM and a Zip
drive sharing
the secondary IDE
cable and a hard
drive using the
primary IDE cable

12. 12
Motherboard:
Power Supply
Connection
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
The motherboard receives its power
from the power supply by way of a 20 or
24-pin connector called the P1 connector

13. 13
Motherboard: Firmware & the Coin Battery
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro
This firmware chip contains flash ROM and CMOS
(Complementary Metal-Oxide Semiconductor ) RAM.
CMOS RAM is powered by the coin battery located near the chip

14. THANK
YOU
14
Computer Hardware
Technician
Centre of Excellence in arts & design, MUET, Jamshoro