Lesson Notes By Weeks and Term - Senior Secondary 2

System Development Cycle II

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Term: 2nd Term

Week: 5

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 2 periods each

Date:       

Subject:      Computer studies and ICT

Topic:-       System Development cycle II

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

  1. Define systems
  2. Discuss the concept of information systems

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 II 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 previous lesson on the systems development cycle

Students pay attention

STEP 2

EXPLANATION

He explains the meaning of systems

 

Students pay attention and participates

STEP 3

DEMONSTRATION

He also discusses the concept of information systems

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

SYSTEM DEVELOPMENT CYCLE II

CONCEPT OF SYSTEMS

A system is a collection of interrelated components that function together to form a whole and achieved outcome. Examples:

 

An information system is a collection of interrelated components that collect, process, store and provide as an output the information needed to complete a (business) task.

 

In systems development, application systems are referred to as information systems.

Therefore, an information System can also be defined as a collection of programs running on computers which interact with one another as well as humans to provide the necessary information needed to make decisions within an organization.

A subsystem is a part of a larger system that can function on its own to perform a task. It can be a system having subsystems or it may just be a single system. The components that make up the overall computer system can be described as sub-systems. These are mainly hardware and software subsystems. The process of dividing a system into subsystems and components is called Functional Decomposition.

 

Information systems and subsystems

A school information system will have the following subsystems: Academic system, Examination Systems, Discipline system, Hostel/Accommodation system, Library system, Fees Billing System, Staff System, Bursary System and so on.

Information Systems and Component Parts

The main components of information systems are:

  1. IT i.e. hardware and software
  2. Data/information
  3. Procedures/policies
  4. People
  5. Communication Networks

 

Types of Information Systems

The ‘classical ‘types of Information Systems found organizations are:

  1. Transaction processing systems
  2. Management information systems
  3. Decision support systems
  4. Executive information systems

 

Some new types of information systems that cannot be classified as above are listed below:

  1. Data warehouses
  2. Enterprise resource planning
  3. Enterprise systems
  4. Expert systems
  5. Geographic information system
  6. Global information system
  7. Office Automation

 

 EVALUATION: 1. Explain the meaning of systems

  1. Discuss the concept of information system

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively