Ch-1. History of Computercontd…

Generation of Computers

First Generation Computers

Second Generation Computers

Third Generation Computers

Fourth Generation Computers

Fifth Generation Computers

First Genera�on computers(1940-1956)

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Some features of first generation computers are : Vacuum Tube based technology was used in this generation. They were very expensive. They generated lot of heat. They had slow input and output device. They were huge in size. They consumed a lot of electricity.

Some of the first generation computers are ENIAC, UNIVAC I and EDVAC.

Second Genera�on computers(1956-1963)

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Some features of Second generation computers are : Transistors based technology was used in this generation. They were very expensive. They generated less heat. They were faster. They were smaller in size. They consumed less electricity.

Some of the second generation computers are UNIVAC III, IBM-1401 and CDC-3600.

Third Genera�on computers(1964-1971)

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Some features of third generation computers are : Integrated Circuits (ICs) based technology was used

in this generation. They were expensive. They generated less heat. They were faster. They were smaller in size. They consumed lesser electricity.

Some of the third generation computers are IBM-360, ICL-1900 and UNIVAC-900.

Fourth Genera�on computers(1972-present)

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Some features of fourth generation computers are : Very Large Scale Integrated Circuits (VLSICs) based

technology was used in this generation. They were very cheap. The concept of internet was introduced. They were faster. They were very smaller in size. They became easily available.

Some of the fourth generation computers are MITS Altair, IBM PC and CRAY-I. Desktop, laptop and tablet are also fourth generation computers.

Fi�h Genera�on computers(present- future)

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Some features of fifth generation computers are : Artificial Intelligence (AI) based technology was used in this

generation. The input and output will be in the form of speech and

graphic. The powerful and compact computers are available at

cheaper rate. They are able to think and take self-decision like human

being..

Some application of fifth generation computers are in the field of robotics, drones and driverless vehicle.

Fi�h Genera�on computers(present- future)

Genera�on of computers

Characteris�c of computer

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Some of the main characteristics of computers are:

High Speed Computers are very fast. They are capable of performing calculations involving large

amount of data. Their working speed is in microsecond, nanosecond and

picoseconds.

Accuracy Computer s are very accurate. They perform all jobs error- free.

• Storage capability

Computer s have much more storage capacity than human beings. They can store any type of data such as images, videos, texts and

audios.

Characteris�c of computer

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Diligence Unlike human beings, computers are free from tiredness and

lack of concentration. They can do repeated work with same speed and accuracy.

VersatilityComputers are very versatile machines. It means they can solve a complex scientific problem and play a

game, simultaneously.

Reduction in paper workThe use of computers lead to reduction in paper work and

speed up the process.

Limita�on of computer

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Some of the limitation of computers are:

They can only perform tasks that they have been programmed to do. They cannot do any work without instructions

from the users. They cannot take their own decisions.

They cannot work without electricity power.

Thank You….