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How to check computer history and generations

Updated on April 2, 2011

history of computer

Computer definition - Is a programmable machine which responds to a specific set of instructions and pre – records list of instructions which are known as programmes?

Computer History and Generations

Abacus computers - These were the first computers cable of only doing addition and subtraction

Pascaline - This was a mathematical calculator which performs addition and subtraction

G.W Leinbiz - Stepped up performance and uses punch card for storage of information, they had got additional function besides addition and subtraction, and also performs square root functionality

Charles Babbage - Uses engine and could compute data and store data and information. They were analytical machine which works as the present computers

First Generation Computers

Computer 1st generation was in the 1940s and since then a service of radical break -through of electronic design has occurred with each major break-through of computer based upon the older form of electronic design being replaced by a new form and this is called computer generations. The 1st generation of computer was these computers whose architecture was based on massive electronic valve (vacuum tube). e.g. electronically digital vacuum computers, universal vacuum computer UNVAC

Other characteristics of 1st generation Computers 1946 - 1959

  • These computers uses vacuum tube for data processing and storage
  • They had a memory size of 20bytes speed of 5mbps
  • They produced a lot of heat
  • These computers were unreliable and could not work fast with a lot of data.
  • They uses punch card for data storage
  • The programmer were machine dependent
  • First generation consume a lot of power

Second Generation of Computer -

2nd Generation computers were more reliable and faster in performance (read and write operations) than the 1st generation which was massive, instead of valves simple transistors were used in design e.g. ATLAS computers

Characteristics of 2nd generation computers 1959-1964

  • Were capable of translating, process and store data
  • Had got memory size of 32bytes speed of 10mbps
  • Were reliable compared to first generation computers
  • Produced less heat compared to first generation computers
  • They uses punch card for data storage
  • Consumed less energy compared to first generation computers

Third generation Computers

Were more powerful, reliable and more compatible in which simple integrated circuits were introduced. They emerged in early 1960s, and examples are IBM 360 Series

Other characteristics of third generation 1965 - 1975

  • They used integrated circuit(i.c.) to store data
  • The integrated circuit consisted of many transistors
  • Uses storage disk for data storage e.g. magnetic disks, tapes
  • Third generation computers were more reliable compared to other previous generations
  • They produced less heat

Fourth Generation Computers

These are computers in use today; they use sophisticated micro-electronic devices

  • These computers uses micro processors to process data
  • The micro processors are single chip which perform computer operation
  • Programs are machine independent
  • Were more reliable

Examples includes personal computers

Fifth generation computers

These are predictions that by early 21st century computers will have developed that will be able to converse with people, human communication. With the fifth generation there will be artificial intelligent computers. For more resources on Computer click Computer Resources


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    • profile image

      Walter 2 years ago

      I enjoy this site a lot thanks

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      ANABEL 2 years ago


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      cure 3 years ago

      good information for reference. maybe samsung 840 EVO can make a comparison.

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      Reader 4 years ago

      What Operating Systems were used in 1st generation computers, were OS used in 1st or 2nd generation computers. DOS and UNIX cui-os came with 3rd gen I think, but not sure.

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      Cardsharing 4 years ago

      Awesome post. Beneficial for lot of people. A computer with multiple users may desire to be monitored by an administrator or its owner for computer activities.

    • profile image

      kinyua john 5 years ago

      i do congratulate u the for the work because we now understand

    • profile image

      mousumi 5 years ago

      THANKS a lot for such an information

    • profile image

      abubakar seidu 5 years ago

      I sincerely appreciate ur effort and knowledge u hve in computer

    • profile image

      Dorcas 5 years ago

      I enjoy this site thanks

    • profile image

      John 5 years ago

      Computers are definitely getting faster. I remember all of this stuff in my computer classes.

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      Ummahani 5 years ago

      History developed of computer highlighting the features of each generation

    • profile image

      Shane Dela Cruz 6 years ago

      I have 4MB USB stick but i guess have to buy enclosure.

    • profile image

      Nicole 6 years ago

      Computers are getting more user friendly.

    • profile image

      Shine 6 years ago

      Amazing how a little USB stick can now hold so much memory.

    • profile image

      Shine 6 years ago

      Amazing how a little USB stick can now hold so much memory.

    • profile image

      Ngozi obi 6 years ago

      Easy and understanding page thanks keep it up

    • seigfried23 profile image

      seigfried23 6 years ago

      Cool hub; I thought initially it was about finding out who's been on your computer

    • profile image

      darwinnak 6 years ago

      nice job dude,keep it up :)

    • profile image

      ayesha 6 years ago

      thankyou so so so much i really need it.and your article is really nice i like it so much keep it up.

    • profile image

      Ibrahim Adam 6 years ago

      Thnks i appreciate with these information

    • profile image

      Azmat Shaikh 6 years ago

      Good Informations Thanks

    • profile image

      monika singh 6 years ago

      i like this language and that is very easy

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      Serene 6 years ago

      You can use run then type dxdiag.Or you can also use the DOS mode if you want a long way :)


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      I'm lorla 6 years ago

      Hi thanks this website is helpful bye

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      Daniel 6 years ago

      What is the actual year computer was invented

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      jessie 6 years ago

      dis site gves a clr info to stdnts..,,whch is really hlpfl to them...

    • profile image

      BETTY 7 years ago


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      coder killer 7 years ago

      i like this site thanks

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      KOTZ... BSIT 7 years ago


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      save my system 7 years ago from United Kingdom - London

      Computers have evolved from being in the 1st generation of computers to the latest and recent version which is the fourth generation.

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      Oyetunji sheyi 7 years ago

      This is a good job pls kip it up, i belyf a lot of student will benefit 4rm this

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      Foibe TK 7 years ago

      this site is providing me with the informaton i need for my computer exam on saturday ....thanx a lot

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      hani robit 7 years ago

      I Like This Site This Site Is Very Good.

      And You Can Get Very Good Information.

      Thanks For Share This Information.

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      Buy links 7 years ago

      my 1st was a HC 87. It had a cassete and a small TV for a screen. After that one i had a HC 2000 which had those big diskette and just loved that one. And after this one my parents bought me a PC 386... well, from there it's all history !

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      Estherbell 7 years ago

      thanks 4 the notes they are realy helpful pliz keep it up(

    • profile image

      thaman1 8 years ago


      3 GHz Intel Core Duo

      Pentium 4 2.4 GHz


      2 GB

      512 MB

      Hard Drive

      160 GB

      40 GB

      Video Card

      128 MB or higher

      64 MB or higher


      19" Flat LCD

      15" Flat LCD or CRT

      Media Drive

      DVD /- RW

      CD RW

      Operating System

      Windows XP SP2

      Windows 2000


      Windows XP

      Network Interface

      10/100/1000 MB Ethernet Card

      10/100 MB Ethernet Card

    • oderog profile image

      oderog 8 years ago from Nairobi

      Thanks thaman1, that you found the hub on computer history and generation useful and will be waiting for your computer specification

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      thaman1 8 years ago

      Nice article Oderog i really appreciate with your post. I had been purchased a computer through a website I will send you the features which i have in my computer then you tell me these features are good or not.

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      monika bindroo 8 years ago

      thanx, i like the language very much but notes must be little elaborated .