# History of computer III ( Basic 3 First Term Week 4 )

### Developed technology

Subject   :  Computer Studies

Class  : Basic  3 / Primary 3  / Year 3

Term : First   Term

Week  : Week 4

Topic  :

### Developed technology

Previous Knowledge : The pupils have previous knowledge of

Early Calculating Mechanical Device ( Basic 3 First Term Week 3 )

that was taught  in their previous lesson.

Behavioural  Objectives : At the end of the lesson , learners will be able to

• Say the history of Computer
• identify early counting devices
• state four early counting device
• explain the transmission of early devices to present day computer
• list the sequences in computer graduation

Instructional Materials

• Wall charts
• Pictures
• Online Resource
• Textbooks
• Early Counting Devices like Abacus

Methods of Teaching

• Role modelling
• Questions and Answers
• Explanation
• Discussion
• Recitation
• Imitation
• Story Telling
• Dramatization

Content :

The history of computing covers the developments from early counting tools such as stone, pebbles and sticks, to devices to aid calculation such as abacus, to modern day computers. Before 20th century, most calculations were done by humans. Early mechanical tools to help humans with digital calculation followed like the abacus were called calculating machines now known as calculator.

Computers were first made basically to calculate, but now we use computer to search for information, input information and retrieve information.

Sequences of computer graduation

Sequence of computer can also be called generations of computers. Generations of computers are the stages the computer has passed through before becoming what we now have as computers .There are five stages of development or generations of computer. Each stage of

development is a generation of the computer.

First generation computers

When computers were first made, they were large and costly. They gave out heat when

used. They were also slow in making calculations and could only store very few items of information. They also needed much electricity before they could be used.

Second generation computers

Soon, the large, costly and slow computers were no longer used by many people. New computers which were cheaper and smaller than the first ones had been made. These were the second-generation computers.These new computers stored many more items of information than the earlier computers.They also used less electricity and were faster than the first generation.

Third generation computers

In the third-generation computers, the electric pathways were all joined together as one and moved very fast, inside the computers. This was called an integrated circuit. The third-generation computers were cheaper, smaller and faster than the second- generation computers. They also used less electricity and gave out less heat when used.

Fourth- generation computers

The type of computers we use today are the fourth-generation computers. The electric

pathways are even more completely joined together inside the computers.The large-scale integrated circuits have made the fourth- generation computers better than all the earlier ones. They are smaller,cheaper and store more items of information than the third- generation computers, used less electricity, faster and well known all over the world.

Fifth generation computers

The makers of computers are still working hard to make even better computers. These are the

fifth generation computers.They are the next generation of computers.Scientists think that these computers will act like human beings

Presentation  :

The topic is presented step by step

Step 1 : The class teacher revises the old topic

Step 2 : The class teacher introduces the new topic

Step 3 : The class teacher allows the pupils to give their own contributions and gives room for pupils” participation

Class Teacher And Pupils Activities. Interaction or  Participation

This involves class teacher  and pupils interaction , conversation , imitation or modeling through discussion , play method or just by recitation or asking and answering questions that are related to the topic that has just been taught

• The class teacher asks the pupils to bring some small stones for counting
• The pupils are asked to bring sample Abacus to class
• Pupils are encouraged to describe the use of the abacus

Evaluation

1. Which generation of computer is being used in school?
2. How many generations of computers do we have?
3. Which generation of computer were electricity pathway join together?
4. Which generation of computer gave out heat when used, used much electricity and were slower ?