This document provides an overview of the major parts of a computer system. It begins by stating the objectives of understanding each computer part and how they relate. It then has activities where students label parts of a computer diagram and categorize input/output/processing/storage devices. The main body defines the computer itself and then key components like the monitor, mouse, keyboard, system unit and expansion cards. It provides details on types of each component and their functions. Activities are assigned for students to name parts and fill out tables/blanks to demonstrate their understanding.

1. LESSON 2:
PARTS OF COMPUTER

2. Prayer

3. LESSON 2:
PARTS OF COMPUTER
Prepared by: Ma’am Jinky

4. OBJECTIVES:
After going through this lesson, you
are expected to:
1. Understand the different parts
and functions of each part of
computer.
2. Learn how each computer parts
correlates to each other.
3. List down the different functions
of each computer parts.

5. Activity 1
With your prior knowledge, label the parts of computer from
the image provided below.
1
2
3
4
5
6 7
10
8
9

6. Activity 1.1
Direction: Fill up the table that corresponds to what has been needed.
You will write the parts of a computer that is related to that category.
Input Devices Processing Device Output Devices Storage Devices
   
   
   
   
   
Input devices – These are the devices that insert data for processing.
Processing device – These are the devices that manipulates all calculations inside the computer.
Output devices – These are the devices that displays the end product.
Storage devices – These are the devices that keep records of the processed data.

7. PARTS OF
COMPUTER

8. Computer
It is an electronic device that could
store, retrieve, and process data.
It has four major parts which are
monitor, keyboard, mouse, and system
unit.
It has its own work to do in every
computer’s functionality.

9. Monitor
It displays electronic visuals
for computers.
It has three major types such
as the CRT, the LCD and the
LED.

10. Major Types of Monitor
Cathode-Ray
Tube (CRT)
It is a large and heavy monitor
with a bulky part on its back. It
has a bowl-shaped screen made
of glass envelope and is an older
version of the LCD monitor we
see today.
Liquid Crystal
Display (LCD)
It is a flat panel display that uses
the light modulating properties of
liquid crystals. It shows clear
images and with a cheaper price
than CRT monitors.
Light Emitting
Diode (LED)
It is a flat panel display, which
uses an array of LED as pixels for
a video display. It has a very
short depth and is light in terms
of weight.

11. Mouse
It is the primary pointing device which involves eye and hand
coordination.
Mechanical Mouse - It uses a rubber ball as its wheels that make
contact inside the unit. When the ball is rolled on in any direction,
sensors inside the mouse detects this motion and move the on-
screen mouse pointer in the same direction.
Optical Mouse - It is an advanced computer pointing device that
uses a light-emitting diode (LED) to detect mouse’s movements.
Wireless Mouse - It is also called as cordless mouse that connects
to a computer without the presence of wires. It uses wireless
technology like, Bluetooth or infrared radio waves.

12. Keyboard
• It is the primary input device which is used to enter data to the computer.
• Standard PS/2 keyboard - It is a type of port developed by IBM for
connecting a mouse or keyboard to a PC. The PS/2 port supports a mini
DIN plug containing just 6 pins.
• Ergonomic keyboard - It is a computer keyboard designed with
ergonomic considerations to minimize muscle strain and a host of
related problems.

13. • Built-in keyboard - It is a data entry typically found on laptop
computers.
• Wireless keyboard - It is a computer keyboard that allows the user to
communicate with computers, tablets, or laptops with the help of radio
frequency (RF), infrared (IR) or Bluetooth technology.
• Flexible keyboard - It is a keyboard usually made of soft silicone that is
highly portable and attaches to a computer through a USB connection
or serial port.

14. System Unit
It is the enclosure for all the other main interior components of a
computer. These components comprise the whole system that holds all
the other computer peripherals.
Case - It is also called as computer chassis, cabinet case or tower
that contains most of the components of a system unit.
Random Access Memory (RAM) - It holds the instructions which
will be processed by the computer processor.

15. Motherboard - It is a printed circuit board (PCB) containing the
principal components of a computer or other device.
Microprocessor - It is the brain of the computer that contains all the
functions of a central processing unit which is responsible for all the
processes in the computer.

16. • Hard Disk Drive (HDD) - It is the mechanism that controls the reading
and writing which furnishes the largest amount of data storage for PC.
It stores data such as videos, pictures, documents, etc.
• Optical Disk Drive (ODD) - It stores and reads file from disc through
laser beam technology.
• Power Supply Unit (PSU) - It delivers stable and reliable power to
your PC.

17. Expansion Cards
It is an electronic card/board that is used to add extra
functionality to a computer.
Video Card It improves display of data into
attractive and colorful images on
the screen.
Sound Card It converts digital data to analog
sound waves you can hear.
Network
Interface Card
(NIC)
It connects your computer to a
local data network or the Internet.

18. Activity 3: Direction: Name the following parts of
computer. Be specific with your answer.

21. Pre-Test already posted on your google classroom deadline after your
asynchronous time in TLE.
Activity 1: Label the parts of computer – Submit on the drive posted
on your google classroom
Activity 2: Posted on your classroom deadline October 14 at
8:00AM)
Activity 3: Name the following parts of computer Submit on the
drive posted on your google classroom together with your Activity 1
Activity 4: Fill-in the blank. To be posted on google classroom after
submitting Activity 2. Write your answer on MS Documents or
Google Docs.(Deadline is on October 15 at 8:00AM)
Activity 5: Fill out the table given in the classroom with
information for computer assembly. Write your answer on
MS Documents or Google Docs.(Deadline is on October 16 at
8:00AM)
Post Test to be posted on October 16 deadline is on October
17 at 5:00PM