2. 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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3. 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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4. 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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5. 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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6. 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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7. 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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8. 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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10. 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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11. 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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12. 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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13. 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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14. 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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15. 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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16. CDD R/W
Compact Disc Drive – Read/Write.
It is a laser/optical storage device.
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20. 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
Ports and connections
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21. 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
Ports and connections
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22. 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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25. 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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26. 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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28. Summary
This lesson talk about :
1) The important parts inside the computer.
2) The ports and connections.
3) The input and output devices.
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