Computer Studies - Junior Secondary 2 - Operating system

Operating system

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Term: 1st Term

Week: 7

Class: Junior Secondary School 2

Age: 13 years

Duration: 40 minutes of 2 periods each

Date:

Subject:      Computer studies

Topic:-       Operating system

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

  1. State the functions of the operating system
  2. List and explain the various types of operating system

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

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher revises the previous lesson on operating software

Students pay attention

STEP 2

EXPLANATION

She states and explains the functions of an operating system

 

Students pay attention and participates

STEP 3

DEMONSTRATION

She lists and explains the types of operating system   

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

OPERATING SYSTEM

FUNCTIONS OF OPERATING SYSTEM

Functions of the operating system include:

  1. Starting of the computer: When we switch on a computer, the necessary files of the operating system get loaded to make it ready to accept a command. This process of loading files is called booting.
  2. Resource allocation: The operating system allocates or assigns resources.
  3. Monitoring of system activities: Another function of the operating system is to monitor the system activities such as system performance and security.
  4. Disk and file management: The operating system contains a program that performs functions related to disk or file management. Some of these functions are: disk formatting, deleting files, creating files and folders, renaming files and copying files or folders.
  5. User interface: The operating system creates an interface between the user and other application programs. A user interface controls how the user interacts with the computer. An example of a user interface is the Graphical User Interface (GUI) and Text User Interface (TUI) also known as the command line interface

TYPES OF OPERATING SYSTEM

i. Real-time operating system (RTOS)

A Real-Time Operating System This is an operating system that rapidly switches between tasks. Real-time operating systems are used to control machinery, scientific instruments and industrial systems.

ii. Single-user-single task

As the name implies, this operating system is designed to manage the computer so that one user can effectively do one thing at a time.

iii. Single-user, multi-tasking

As the name implies, this operating system is designed to manage the computer so that one user can effectively do more than one thing at a time.

iv. Multi-user

A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously.

v. Distributed

A distributed operating system manages a group of independent computers and makes them appear to be a single computer.

EVALUATION:    1. State five functions of the operating system

  1. List and explain four types of operating system

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively