How to check computer history and generations

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

More by this Author

Comments 39 comments

monika bindroo 7 years ago

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

profile image

thaman1 6 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.

oderog profile image

oderog 6 years ago from Nairobi Author

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

profile image

thaman1 6 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



Operating System

Windows XP SP2

Windows 2000


Windows XP

Network Interface

10/100/1000 MB Ethernet Card

10/100 MB Ethernet Card

Estherbell 6 years ago

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

Buy links 6 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 !

hani robit 6 years ago

I Like This Site This Site Is Very Good.

And You Can Get Very Good Information.

Thanks For Share This Information.

Foibe TK 6 years ago

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

profile image

Oyetunji sheyi 6 years ago

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

save my system profile image

save my system 6 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.

KOTZ... BSIT 6 years ago


coder killer 6 years ago

i like this site thanks

BETTY 6 years ago


jessie 5 years ago

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

Daniel 5 years ago

What is the actual year computer was invented

I'm lorla 5 years ago

Hi thanks this website is helpful bye

Serene 5 years ago

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


monika singh 5 years ago

i like this language and that is very easy

Azmat Shaikh 5 years ago

Good Informations Thanks

Ibrahim Adam 5 years ago

Thnks i appreciate with these information

ayesha 5 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.

darwinnak 5 years ago

nice job dude,keep it up :)

seigfried23 profile image

seigfried23 5 years ago

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

Ngozi obi 5 years ago

Easy and understanding page thanks keep it up

Shine 5 years ago

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

Shine 5 years ago

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

Nicole 5 years ago

Computers are getting more user friendly.

Shane Dela Cruz 5 years ago

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

Ummahani 4 years ago

History developed of computer highlighting the features of each generation

John 4 years ago

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

Dorcas 4 years ago

I enjoy this site thanks

abubakar seidu 4 years ago

I sincerely appreciate ur effort and knowledge u hve in computer

mousumi 4 years ago

THANKS a lot for such an information

kinyua john 4 years ago

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

Cardsharing 3 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.

Reader 3 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.

cure 2 years ago

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

ANABEL 16 months ago


Walter 16 months ago

I enjoy this site a lot thanks

    Sign in or sign up and post using a HubPages Network account.

    0 of 8192 characters used
    Post Comment

    No HTML is allowed in comments, but URLs will be hyperlinked. Comments are not for promoting your articles or other sites.

    Click to Rate This Article