PCs ENVIRONMENT and
PERIPHERALS
Lecture 2
System units:
Computer Case
Computer Fan
Power supply
Mother board.
Computer Case:
- Cover the mother board content.
- Give your pc a nice look.
It is so important for safety:- Protect your PC from any outside thing(Dust, liquid….)
Case style:
- Tower, Desktop case.
- The common type of the case : AT, ATX.
- Not cost money and stay long time even you upgrade your
PC.(unless manufactory change the basic style.)
Power supply :
- Power supply: Main article.
- Supply power to computer.
- Usually with a cooling fan to
make PC cold.
- There are many power cables
from power supply to mother
board and devices
(Hard disk, Floppy, CD-Drive…)
Computer Fan:
- Used to lower the temperature of the
computer.
Motherboard:
- The mother board is the key components of your
computer.
- It serve as the main computational and processing source
of your PC.
- It is the body or main frame of the computer which all
other components interface.
- Provides connections to all other components that must
attach to it.
Motherboard(continue)
- The motherboard contains sensitive components :
electronic components.
- Memory, chips, cards, CPU and any devices you see a circuit
board in it’s body and you should use it careful.
- Quality of PC depend on quality of electronic components.
Motherboard:
The Motherboard components:
What are two main components on the
motherboard?

Central Processing Unit (CPU)
Also called a processor:
Electronic device that interprets and carries out the basic
instructions that operate the computer

Memory
Temporary holding place for data and instructions
The Motherboard components:
1- IDE socket (Integrated Drive Electronics ).(for HD, CD)
2- FDD Socket (Floppy Disk Drive).
3- socket for power supply (to mother board).
4- port for Mouse, Keyboard.
5- port for Printer.
6- MEMORY.
7- CPU Processor socket.
8- Bios and cmos.
9- CHIPSE (for control).
9- EXPANSION SLOTS.(other cards)
10- Other CHIPSET for control.
11- Other Sockets
The Motherboard components:
IDE socket
FDD Socket
MEMORY
Other CHIPSET
port for
Mouse,
Keyboard
.Printer.
power
supply
socket
SLOT EXPANSION.(other cards)
Processor socket
Bios and cmos
The Motherboard components:
IDE socket (Integrated Drive Electronics ).
- For HD drive and CD
drive.
- IDE socket : 40 pins.
-
Nowadays IDE socket is
founded in the old PC
editions, SATA socket is
more common.
Data cable
IDE socket
IDE socket (Integrated Drive Electronics ).
FDD Socket (Floppy Disk Drive(
- For Floppy Drive.
- 34 pins.
Storage Devices:
- Hard Disk Drive.
- Floppy Disk Drive.
- CD Drive.
Hard Disk Drive:
There is two types of hard drive connectors the computer
could use to transfer data :
PATA , SATA.
PATA : parallel Advance Technology Attachment.
SATA: Serial Advance Technology Attachment.
Hard Disk Drive:
Hard Disk Drive:
Connect by :
Data Cable(to IDE socket) – power cable(to power supply)
Hard Disk Drive:
Floppy Disk Drive.
Connect by :
Data Cable(to FDD socket) – power cable(to power supply).
Floppy Disk Drive:
CD Drive:
Connect by :
Data Cable(to IDE socket) – power cable(to power supply).
CD Drive:
IDE socket (HD – CD):
Processor (CPU):
Type of CPU by the way that connect with motherboard:
1- socket CPU.
2- slot (old CPU).
Processor (CPU):
Processor (CPU installation ):
1. Unlock the socket by
lifting the lever up to 90
degree angle
2. Position the CPU so that
the CPU corner with the
golden triangle matches
the socket corner with the
small triangle.
3. Carefully insert the CPU
into the socket until it fits
in place.
Processor (CPU installation ):
4. When the CPU is in place,
push down the socket lever
(until it clicks on the side
tab) in order to secure the
CPU.
Now the lever in locked
state
•
Mention the advantages of SATA over PATA
and the disadvantage of SATA ?
Which one is the best ?