A Detailed Lesson Plan Introduction to Computer

Prepared By: Ms. Marie Carmelie P. Dayag

I. Objectives
At the end of the lesson, the students will be able to:
1. Familiarize yourself with characteristics of computers.
2. Identify the basic components of a computer.
3. Explain the importance of various units of a computer.

II. Subject Matter

Topic: Getting Started in Computer

Reference/s: Basic Concepts of Computer
http://www.just.edu.jo/~mqais/CIS99/PDF/Ch.01_Introduction_%20to_computers.pdf

Materials: Laptop, PowerPoint Presentation, Projector, desktop

III. Procedure

Teacher Activity Student Activity

A. Preparatory Activity
 Prayer One student stands as the prayer leader

 Greetings Students greet the teacher

Good morning class Good morning ma’am.

 Routine Attendance Check Students greet the teacher

Is there any absent for today’s class? Nobody’s absent ma’am.

Then students will then seat properly, and

prepare for the lesson

A. Motivation

Teacher Activity Student Activity

Class, who among you have already The students raised their hands.
experienced in using computer? (raised their Yes ma’am, we already experienced in using
hands) computer.

What do you hope to learn today class? “We want to explore more about computer
ma’am.”
Ask students to take notes in student (Students will prepare handbook)
handbook (dotted lines are provided in the
handbook for this purpose) when necessary.
If you have question don’t hesitate to ask.

B. Lesson Proper

Teacher Activity Student Activity

Computers are everywhere and everyone is The students listen to the teacher
using them! Computers are in our cars, our
kitchens, our living rooms, our stores and,
most importantly, in our workplaces. They
are used to communicate, to play, and to
make everyday tasks easier (once you know
how to use them!). The ability to use a
computer will enhance your ability to not
only keep in touch with friends and family
but it will also increase your ability to find
and keep a job.
A computer is a programmable machine
designed to perform arithmetic and logical
operations automatically and sequentially on
the input given by the user and gives the
desired output after processing. Computer
components are divided into two major
categories namely hardware and software.
Hardware is the machine itself and its
connected devices such as monitor,
keyboard, mouse etc. Software are the set of
programs that make use of hardware for
performing various functions. The students understand the lecture.

The characteristics of computers that have

made them so powerful and universally
useful are speed, accuracy, diligence,
versatility and storage capacity. Let us
discuss them briefly.
 Speed
Computers work at an incredible speed. A
powerful computer is capable of performing
about 3-4 million simple instructions per
second.
 Accuracy
In addition to being fast, computers are also
accurate. Errors that may occur can almost
always be attributed to human error
 Diligence
Unlike human beings, computers are highly
consistent. They do not suffer from human
traits of boredom and tiredness resulting in
lack of concentration.
 Versatility
Computers are versatile machines and are
capable of performing any task as long as it
can be broken down into a series of logical
steps.
 Storage Capacity
Today’s computers can store large volumes
of data. A piece of information once
recorded (or stored) in the computer, can
never be forgotten and can be retrieved
almost instantaneously.
“Yes ma’am.”
COMPUTER ORGANIZATION
A computer system consists of mainly four
basic units; namely input unit, storage unit,
central processing unit and output unit.
Central Processing unit further includes
Arithmetic logic unit and control unit
A computer performs five major operations
or functions irrespective of its size and make.
These are
 it accepts data or instructions as input,
 it stores data and instruction
 it processes data as per the instructions,
 it controls all operations inside a computer,
and
 it gives results in the form of output.

Functional Units:
a. Input Unit: This unit is used for entering
data and programs into the computer system
The students master the functional units.
by the user for processing.
b. Storage Unit: The storage unit is used for
storing data and instructions before and after
processing.
c. Output Unit: The output unit is used for
storing the result as output produced by the
computer after processing.
d. Processing: The task of performing
operations like arithmetic and logical
operations is called processing. The Central
Processing Unit (CPU) takes data and
instructions from the storage unit and makes
all sorts of calculations based on the
instructions given and the type of data
provided. It is then sent back to the storage
unit. CPU includes Arithmetic logic unit
(ALU) and control unit (CU)
 Arithmetic Logic Unit: All calculations
and comparisons, based on the instructions
provided, are carried out within the ALU.
 Control Unit: Controlling of all operations
like input, processing and output are
performed by control unit.
Memory
Computer’s memory can be classified into
two types; primary memory and secondary
memory
a. Primary Memory can be further
classified as RAM and ROM.
 RAM or Random Access Memory is the
unit in a computer system. It is the place in
a computer where the operating system,
application programs and the data in
current use are kept temporarily so that
they can be accessed by the computer’s
processor.
 ROM or Read Only Memory is a special
type of memory which can only be read
and contents of which are not lost even
when the computer is switched off. Among
other things, ROM also stores an initial
program called the ‘bootstrap loader’
whose function is to start the operation of
computer system once the power is turned
on.

b. Secondary Memory
These include devices that are peripheral and
are connected and controlled by the
computer to enable permanent storage of
programs and data. Secondary storage
devices are of two types; magnetic and
optical. Magnetic devices include hard disks
and optical storage devices are CDs, DVDs,
Pen drive, Zip drive etc.
 Hard Disk
Hard disks are made up of rigid material and
are usually a stack of metal disks sealed in a
box.
 Compact Disk
It can hold large amount of information such
as music, full-motion videos, and text etc.
CDs can be either read only or read write
type.
 Digital Video Disk
DVDs are primarily used to store music or
movies and can be played back on your
television or the computer too. These are not
rewritable.

Input / Output Devices:

These devices are used to enter information The students master the Input and Output
and instructions into a computer for storage devices
or processing and to deliver the processed
data to a user.
These input/output devices are also known as
peripherals since they surround the CPU and
memory of a computer system.
a) Input Devices
An input device is any device that provides
input to a computer. There are many input
devices, but the two most common ones are a
keyboard and mouse
Keyboard: The keyboard is very much like
a standard typewriter keyboard with a few
additional keys.
QWERTY (regular keys) • Directional Keys
for scrolling • Numeric Keypad if on
computer • Shortcut Keys Ctrl/Atl/Del to log
in; Ctl/C; Ctl/V
Mouse: A device that controls the movement
of the cursor or pointer on a display screen.
Trackball: A trackball is an input device
used to enter motion data into computers or
other electronic devices.
Touchpad: A touch pad is a device for
pointing (controlling input positioning) on a
computer display screen. It is an alternative
to the mous.
Touch Screen: It allows the user to
operate/make selections by simply touching
the display screen. A display screen that is
sensitive to the touch of a finger or stylus.
Light Pen: Light pen is an input device that
utilizes a light-sensitive detector to select
objects on a display screen.
Magnetic ink character recognition
(MICR): MICR can identify character
printed with a special ink that contains
particles of magnetic material.
Optical mark recognition (OMR): Optical
mark recognition, also called mark sense
reader is a technology where an OMR device
senses the presence or absence of a mark,
such as pencil mark.
Bar code reader: Bar-code readers are
photoelectric scanners that read the bar codes
or vertical zebra strips marks, printed on
product containers.
Scanner: Scanner is an input device that can
read text or illustration printed on paper and
translates the information into a form that the
computer can use.
b. Output Devices:
Output device receives information from the
CPU and presents it to the user in the desired
from. The processed data, stored in the
memory of the computer is sent to the output
unit, which then converts it into a form that
can be understood by the user.
Monitor: is often used synonymously with
“computer screen” or “display.” Monitor is
an output device that resembles the television
screen. It may use a Cathode Ray Tube
(CRT) to display information.
Printer: Printers are used to produce paper
(commonly known as hardcopy) output.
Based on the technology used, they can be
classified as Impact or Non-impact printers.
1. Impact printers use the typewriting
printing mechanism wherein a hammer
strikes the paper through a ribbon in order to
produce output.
2. Non-impact printers do not touch the
paper while printing. They use chemical,
heat or electrical signals to etch the symbols
on paper.
Plotter: Plotters are used to print graphical
output on paper. It interprets computer
commands and makes line drawings on paper
using multicoloured automated pens.
Facsimile (FAX): Facsimile machine, a
device that can send or receive pictures and
text over a telephone line.
Sound cards and Speaker(s): An expansion
board that enables a computer to manipulate
and output sounds.

Activity: Cooperative Learning Strategy:

Think-Pair-Share

Teacher gives out the classwork sheet and

explains to the pupils on how to do it.

Label the following devices and choose the

answer from the box provided. The student’s pair themselves into 2 and write
their answer in the appropriate label of each
Power Mouse System Unit parts of computer to the given chart provided by
Button the teacher.
Monitor Power Screen
Supply By the instructions and couching of teacher,
students develop their performing skills.

The students prepare their chart and explain the

part of computer in front of the class.
M
S

Right Button Left button

Keyboard Mouse
 Alphanumeric Numeric Special
Keys Keys Keys
Cursor Keys Keyboard Function
Keys

Generalization
Okay class, we have a short generalization
about our topic for today. In this lesson we
learned to be familiar to the characteristics of
computers, to identify the basic components
of a computer and to explain the importance
of various units of a computer.

The teacher may ask the following question

to know the retention of the students to the
topic.
Questions to be asked:

1. How many basic parts of computer? Ma’am, there are four (4) basic parts of
computer
2. What are they?
Ma’am, monitor, keyboard, CPU and mouse.
3. Could you show us which one is monitor,
keyboard, mouse, CPU. One student shows each part of the computer to
the class
IV. Evaluation

Formative Assessment

In a half piece of paper, please answer the following questions:

a. What did you learn today?
b. What are the most difficult part of our discussion?
c. Explain in 5 sentences the process of getting started with the computer.

V. Assignment

1. Describe what an operating system is.

2. Explain the importance of operating system.
3. Differentiate between system software and application software