Lesson Notes By Weeks and Term - Senior Secondary 1

Overview of computer system

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Term׃  1st Term

Week: 1

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 2 periods each

Date:       

Subject:      Computer Studies and ICT

Topic:-       Overview of the computer system

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Define a computer system
  2. Outline the basic operations of a computer on data
  3. Explain the two main constituents of a computer system

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, pictures, Data Processing for senior Secondary Education by Hiit Plc, WAPB Computer Studies for Senior Secondary I by Adekunle et al, On-line Materials.

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher reviews the students’ knowledge about the word “computer studies and ICT”

Students pay attention

STEP 2

EXPLANATION

He defines a computer system and outlines the basic operations a computer performs on data

 

Students pay attention and participates

STEP 3

DEMONSTRATION

He explains the two main constituents of data

Students pay attention and participate

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

OVERVIEW OF A COMPUTER SYSTEM

A computer can be defined as an electronic machine (device) which under

the control of a stored program accepts data, stores the data, processes

the data and brings out the results as information.

Computer as an IPOS system Computer performs 4 key operations on data

  1. Input
  2. Processing
  3. Output
  4. Storage
  5. Input: data are entered into the computer through the input unit. Data are

raw facts that are to be processed into meaningful form.

  1. Processing: Computer performs certain operations on data entered into

it; the Central Processing Unit (CPU) handles this operation.

  1. Output: The result of what has been processed will be displayed by the

output device such as the monitor.

  1. Storage: Inputted data and processed information are stored in the

memory and permanent storage on the computer.

 

Constituents/Components of a Computer system

The computer is referred to as a system because it is made up of several

components that work together to enable it function properly. There are 2

main constituents of the computer system, these are: 

The hardware 

The Software

  1. Hardware

These are the physical components of the computer system. They are the

tangible parts that can be seen and touched.

  1. Software The software is a term used to describe the collection (or set)

of programs that can be run on a computer system. A program is a set of

instructions that tells the computer what to do, when to do it and how to do

it.

EVALUATION:    1. Define computer system

  1. Outline the basic operations a computer performs on data
  2. Explain the components of a computer system

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively