Avinash Singh Computer Learning,Computer Fundamental How many Generations of Computer?

How many Generations of Computer?

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How many Generations of Computer? – Computer is developing from its birth till today. During this, the computer has come out of the vacuum tube and has reached Artificial Intelligence . And he is leaving the room and sitting in his hand. He has achieved this progress in the last 70-80 years.

This development period of computer is called Computer Generations (in Hindi). As the computer hardware and software changed. Accordingly, Computer Generations were determined. Till now 5 generations of computer – 5 Generations of Computer in Hindi , have been determined.

You can also read: What Is Network Topology?

In this post we will give you complete information about Computer Generations. And will also tell the characteristics of each generation of computers and the names of some computers.

How many Generations of Computer?
How many Generations of Computer?

First Generation of Computer

The beginning of the first generation of computers has been considered since 1946. Because at this time two great people JP Eckert and JW Mauchy made the first electronic device based on vacuum tube. Vacuum Tube was invented by John Ambrose Fleming in the year 1904 . This vacuum tube was used in the first generation computers.

Punch Cards, Paper Tap and Magnetic Tap were used as input devices and output devices . Machine language was used as a programming language in the first generation computers. And Magnetic Drums were used for memory.

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Features of first generation computer

  • based on vacuum tube
  • Use of magnetic drums for storage
  • Used for punch cards input and output
  • too big and heavy
  • use of machine language
  • AC needed
  • very expensive and not reliable
  • need constant maintenance

Names of some first generation computers

  • ENIAC – Electronic Numeric Integrated and Calculator
  • IBM-701
  • IBM-650

Second Generation of Computer

Now Primary and Secondary Memory started being used in computers. And they started supporting Assembly and High-Level Programming Language. And they started using Multi-Programming Operating Systems .

The time period of the second generation of computers is considered to be 1956-63. In this generation of computers, transistors were used in place of vacuum tubes. The transistor was invented in 1947 by William Shockely .

Features of second generation computers

  • Based on Transistor
  • Use of Magnetic Core and Tap for Memory
  • still big and heavy
  • AC needed for cooling
  • specific use
  • Increase in Processing Speed
  • Requires less energy than first generation

Names of some computers of second generation

  • Honeywell 400
  • IBM 7094
  • CDC 1604
  • CDC 3000 Series
  • UNIVAC 1108
  • IBM 1400 Series

Third Generation of Computer

The period of the third generation of computers is considered to be 1964-71. Computers of this generation were based on IC – Integrated Circuit. IC was invented by an engineer Jack Kilby . A single IC contained many transistors, resistors, capacitors.

The invention of IC made the size of the computer very small. Now they could be easily transported from one place to another. And the use of Multi-Programming OS and High-Level Programming Languages ​​improved further.

Features of third generation computer

  • based on IC
  • small in size and low in weight
  • more reliable and cost-effective
  • lack of maintenance
  • AC needed at low energy consumption
  • Using Mouse and Keyboard
  • Processing faster than other generations
  • Possible to use for General Purpose
  • increase in efficiency

Names of some third generation computers

  • PDP-8
  • PDP-11
  • ICL 2900
  • IBM 360 Series
  • Honeywell 6000 Series
  • TDC-B16

Fourth Generation of Computer

The beginning of the fourth generation of computers is considered to be from 1971. And the time till 1980 is considered for the fourth generation. During this IC was further developed, at this time about 5000 transistors could come in ICs. And its efficiency was equal to 3,00,00 transistors.

These ICs were called VLSI – Very Large Scale Integrated Circuit . This technology read the foundation of Microcomputer, because Micro Processors were being used at this time. This time brought computer revolution and the computer reached the common man.

Fourth generation computers run on Microprocessor. And at this time GUI-Graphical User Interface was developed. And Windows, Mac OS was created. It was during this time that companies like Microsoft and Apple started. And today they are present.

Features of fourth generation computer

  • Based on VLSI Based Microprocessors
  • Use of GUI Based OS
  • Faster, reliable and purer
  • very small and light in size
  • Internet access
  • access to common man
  • No need for AC, use of Fan
  • Use of languages ​​like C, C++, .net
  • less expensive

Names of some fourth generation computers

  • IBM 4341
  • DEC 10
  • STAR 1000
  • PUP 11
  • Macintosh
  • PCs

Fifth Generation of Computer

The device you are reading this article on. It is the fifth generation computer. The time period of the fifth generation has been considered from 1980 to today. ULSI – Ultra Large Scale Integrated Circuit Based Microprocessors started being used in computers during this period . Due to which they have become very fast and small. Because one crore electronic components can come in a ULSI Based Microprocessor.

Fifth generation computers are being made to think like us humans. For which technologies like Artificial Intelligence, Internet of Things , Robotics etc. are constantly being developed and used.

Today’s computers are the size of a hand clock and are also less expensive. Which almost everyone can buy. Today computers have reached every human being in the world in some form.

Features of fifth generation computer

  • Based on ULSI Based Microprocessor
  • Lightweight, cheap, reliable and fast
  • more pure, easier to use
  • Use of GUI based OS
  • Using Multimedia, Touchscreen, Web, Voice Control
  • negligible maintenance
  • low energy use
  • Using C, C++, Java, .net, ASP
  • development of artificial intelligence
  • Evolution of the Internet of Things

Names of some fifth generation computers

  • Desktop PCs
  • Macbooks
  • Laptops
  • Notebooks
  • Ultrabooks
  • Chromebooks
  • iPhone
  • iWatch


In this post, we have given you complete information about Computer Generations. You know how the computer developed from the first generation to the fifth generation. We hope that this article will prove useful to you and you will like it.

You can also visit my Hindi YouTube Channel.

Avinash Singh

I am Avinash Singh, a software engineer from the profession and have been working in the IT industry since 2009. I live in Barabanki district of Uttar Pradesh in India and completed intermediate in 2001 from Ram Sevak Inter College, a UP Board school. After inter I completed my professional degree (BCA & MCA) from Indira Gandhi National Open University, Delhi in 2008 and along with it I did many certifications to keep my knowledge up to date and the next year I started a software development company E – Vision Technocraft Pvt Ltd.

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