Introduction to personal computer

Presented by:
Haidar Al Fehaid 452
Supervisor:
Dr. El Abed, Haikal
5/31/2015 1

Content overview
 Introduction
 First part : Computer parts
 Second part: Ports and connections
 Third part: Input and Output devices (I/O)
 Summary
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Introduction
 What is the personal computer?
 It is an electronic device.
 Stores data and information.
 Has hardware and software linked together.
 Process data and information.
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First part
 Computer parts:
1) Motherboard
2) CPU
3) RAM
4) Power supply
5) Hard disk drive (HDD)
6) Compact Disc Drive (CDD R/W)
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Case
What is the case of computer?
 It is as a box.
 Contains the internal parts of computer.
 Protects the internal parts.
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What are the types of computer case?
 The types of computer case are:
 AT, ATX and BTX
1) AT ( Advance Technology)
2) ATX ( Advance Technology Extended )
3) BTX ( Balance Technology Extended )
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Motherboard
What is the motherboard?
 It is the main printed circuit board inside the computer.
 Contains internal components installed on it.
 Enables to connects all computer parts together.
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What are the common type of motherboards?
 The common type of motherboards are:
1) AT ( Advance Technology)
2) ATX ( Advance Technology Extended )
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CPU
What is the CPU?
 Central Processing Unit.
 It is the brain of computer.
 Controls internal and external parts.
 Contains Control Unit & Arithmetic Logic Unit.
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RAM
What is the RAM?
 Random Access Memory
 It is a temporary storage (short term).
 Supports CPU to process the instructions and data
quickly.
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What are the types of RAM?
Dynamic RAM Static RAM
 Charges leak
 Need refreshing even when powered
 Simpler construction
 Smaller per bit
 Less expensive
 Need refresh circuits
 Slower
 Main memory
 No charges to leak
 No refreshing needed when powered
 More complex construction
 Larger per bit
 More expensive
 Does not need refresh circuits
 Faster
 Cache
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Power Supply
 Converts the volt from the Alternating Current (AC)
to the Direct Current (DC).
 Provides the suitable volts for the internal parts of
computer.
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What are the two types of power supply?
AT ATX
 Old standard
 Uses with AT motherboard
 Two 12-pin plugs
 Physical switch
 Provides less than 250 watts
 New standard
 Uses with ATX motherboard
 One 20/24 pin plug
 Soft switch
 Provides 300 watts or more
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Hard disk drive
 It is the secondary storage device that permanently
stores all data and information of computer.
 An electromagnetic storage device.
 Stores operating system.
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CDD R/W
 Compact Disc Drive – Read/Write.
 It is a laser/optical storage device.
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Group work
3 Minutes
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Second part
 Ports and connections:
1) PS/2
2) USB
3) RJ-45
4) LPT
5) VGA
6) An audio ports
7) Fire Wire
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Ports and connections
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PicturePort name and definitionsNo
PS/2 ( Personal System ) : is used to connect
the mouse.
1
PS/2 : is used to connect the keyboard.
2
USB ( Universal Serial Bus ): is used to
connect various USB devices.
3
RJ-45 (Ethernet port): is used to connect the
computer to the LAN.
4
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PicturePort name and definitionsNo
LPT ( Line Printer Terminal ): is used to
connect the parallel device such as printer and
scanner.
5
VGA (Visual Graphic Adapter ): is used to
connect display devices.
6
An audio ports: is used to connect an audio
devices to the computer.
7
Fire Wire: is used to connect multiple types of
devices that requires faster data transmission
speed.
8
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Serial vs. Parallel
Serial port Parallel port
 All the bits go to one by one
through the CPU to process.
 New ( plug an play)
 Supports hot swap technology
 Charges some devices.
 Runs up to 63 devices in one
time.
 USB & Fire Wire
 Fast data transmission
 All the bit go to in one time
through the CPU to process.
 Old
 LPT
 Slow data transmission
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Partner work
2 minutes
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Third part
 Input devices
 Output devices
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Input and Output device
 Input device: uses to enter data or information into a
computer.
 Output device: uses to send data or information from a
computer to another device that connected to the
computer.
 Note: some devices can be both input and output
devices such as touch screen etc.
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Game
 Divide the trainees to three groups to write the name of
input, output and both ( I/O ) devices on the whiteboard.
 Group A: Input devices
 Group B: Output devices
 Group C: Input & Output ( I/O ) devices
The time is 2 minutes.
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Individual work (Quiz)
3 minutes
5/31/2015 27

Summary
 This lesson talk about :
1) The important parts inside the computer.
2) The ports and connections.
3) The input and output devices.
5/31/2015 28

Introduction to personal computer

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