LESSON 04 COMPUTER SYSTEM SERVICING

1. COMPUTER SYSTEM
SERVICING NCII
INTEGRAL HARDWARE AND COMPONENTS OF COMPUTER SYSTEM
Marvin B. Broñoso
CSS Teacher / Trainer
0918 6975164

2. Learning Outcome
At the end of this lesson you will:
• Define the term computer.
• Explain what builds a computer system.
• Classify the peripheral device according to
it’s type.
• Discuss the functions of the integral
hardware of a computer system

3. Learning Content
• What is a computer system
• Computer Peripheral and devices
• Integral part that builds a computer system
• Computer back ports and panel

4. WHAT IS A

5. DERIVED FROM THE WORD COMPUTE MEANING TO CALCULATE
AND PERFORM ARITHMETIC OPERATION.

6. • A computer is an electronic
device, operating under the
control of instructions stored
in its own memory that can
accept data (input), process
the data according to
specified rules, produce
information (output), and
store the information for
future use.
WHAT IS A COMPUTER?
Photo credits to: https://vonguru.fr/wp-content/uploads/2017/01/Dell-XPS-27-all-in-one-PC-1.png

7. What is a computer system?
Output device
Output device
Output device
Input device
Input device
System Unit
A computer system is
compose of Input, Output
and processing device. It
process the data and
instruction given by the
user (peopleware).

8. Any digital computer carries out five functions in gross terms:
○ Takes data as input.
○ Stores data/instructions
○ Process the data and converts it into useful information
○ Generate output
FUNCTION OF A
COMPUTER SYSTEM

9. Photo credits to: https://vonguru.fr/wp-content/uploads/2017/01/Dell-XPS-27-all-in-one-PC-1.png

10. All kind of computer system is consists of
HARDWARE and SOFTWARE.
HARDWARE
physical parts/element that
constitutes/build a computer
system.
SOFTWARE
Organized collection of
computer data and instruction
that the computer carries out.
Photo credits to: https://www.tutorialspoint.com/computer_fundamentals/images/computer_hardware.jpg

11. COMPUTER HARDWARE
• Divided into 3 parts which is.
– Input device
– Output device
– Processing device

12. COMPUTER HARDWARE
INPUT DEVICES (peripheral)
- Any piece of computer hardware
equipment that provide data information to
the computer system.

14. COMPUTER HARDWARE
OUTPUT DEVICE
- any piece of computer hardware
equipment used to display result of data
processing carried out by the computer
system.

16. COMPUTER HARDWARE
• PROCESS DEVICE
- the system device that process all the
information. It is powered by CPU (Central
Processing Unit) which serves as the brain
of the device / computer system.

17. Central Processing Unit is comprised into three parts:
• Control Unit
• Main Memory (Register)
• Arithmetic Logic Unit (ALU)

19. READYY ! ! !

21. MOTHERBOARD
Circuit board that contains the electrical
circuitry for the computer. All computer
components / parts of the computer are
connected to the motherboard.

23. CENTRAL PROCESSING UNIT
(CPU)
Computer processor is the one that holds
and process data and instruction in the
computer.
Also known as the brain of the computer.

24. FACTORS THAT AFFECTS
THE PERFORMANCE OF A
CPU INCLUDES:
• Number of existing transistors.
• Data bus width
• Clock Speed (measured by hertz)
• Operation per microprocessor cycle
• Type of chip

25. DISK DRIVE
a technology that enables reading,
writing, deleting and modifying of data
on a storage disk.

26. EXAMPLES OF DISK DRIVE
HARD DISK DRIVE (HDD)
The main data storage inside your computer.
Operating system, application software and
most common files are stored inside the hard
disk drive. There are two types of Hard Disk
Drive.
• IDE (Old HDD that uses pins)
• SATA (New Technology HDD that uses slot)
SATA
IDE

27. EXAMPLES OF DISK DRIVE
CD/DVD DRIVE
Disk drive use to store, read, write and modify
data in a compact disc. There are two types of
CD/DVD Drive
• ROM (Read Only) – Use to store and read
data only.
• RW (Rewritable) - Use to store, read, write
and modify data.

28. EXAMPLES OF DISK DRIVE
FLOPPY DISK DRIVE (FDD)
Disk drive use to store, read, write and modify
data into a Floppy diskette.

29. RANDOM ACCESS MEMORY
(RAM)
Temporarily stores data and instruction
given by the user.

30. TYPES OF RAM
Synchronous Dynamic Random Access Memory
SDRAM
Double Data Rate Random Access Memory
DDR2, DDR3, DDR4

31. POWER SUPPLY UNIT (PSU)
It supplies electricity to the entire
computer system. It converts
alternating current (AC) into direct
current (DC)

32. TYPES OF PSU
• AT Power Supply – used by very old PC
• ATX Power Supply – still used by some PC
• ATX-2 Power Supply – Commonly use today

34. TYPES OF PSU

35. EXPANSION CARDS
• A piece of additional card/board use to add
extra function to your computer system.
Example: Video Card, Sound Card
Network Card

36. NETWORK INTERFACE CARD VIDEO CARD
SOUND CARD WI-FI ADAPTER NETWORK CARD

37. COMPUTER BACK PORT

38. COMPUTER BACK PORT

39. COMPUTER BACK PORT

40. COMPUTER BACK PORT
LINE IN
LINE OUT
MICROPHONE