The Computer Generations. five generations

                 The Computer Generations


     The computer is divided into five generations on the basis of technology.



  • First Generation (1945 - 1955)
  • Second Generation (1955 - 1964)
  • Third Generation (1964 - 1975)
  • Fourth Generation (1975 - 1989)
  • Fifth Generation (1989 To Present)

First Generation (1945 - 1955) : - The first generation of computers was considered since 1945. is . Vacuum Tube Technology was used in this generation.
The Computer Generations. five generations

This generation has the following characteristics.



  • Vacuum tube technology was used in this generation.
  • According to that time, these computers used to calculation at a very high speed.
  • They were very large in size.
  • He used to use electricity more.
  • It was difficult to drive them.
  • Machine language was used in this.
  • In this, magnetic tape and punch cards were used as memory.
  • It was difficult to maintain them.


Second Generation (1955 - 1964) : - 


The beginning of Second Generation is considered from 1956 to 1964. Transistor was used in this generation. Developed by Willom Shockly in 1947. 


Features of Second Generation:



  • Transistor Technology was used in this.
  • The ability of this generation computer to work was much greater than the first generation computer.
  • Their size was reduced because transistor was used in it.
  • Assembly and high level language were used in it.
  • They were less hot.
  • They were easy to operate.
  • Magnetic tape was used as memory in this.


 Third Generation (1964 - 1975): - The beginning of the third generation of computers is considered since 1964. IC was being used in this generation. The full name of IC is Integrated Circuit. The IC was developed in 1958 by JackKilby.


 Features of Third Generation:



  • IC Technology (SSI) was used in it. The full name of SSI is Small Scale  Integration. 10 to 20 elements were installed on this chip.
  • They used to work much faster than the first and second generation.
  • They were very small in size.
  • This computer was very reliable.
  • In this, high label language was used for programming.
  • We could easily move them from one place to another.
  • In this, magnetic disks were used as memory.


 Fourth Generation (1075 - 1389): - The beginning of the fourth generation of computers is considered from 1975 to 1989. Modern technology of IC was being used in this generation. This technology of IC. Its full name was VLSI, Very Large Scale Integration. Ten to twenty thousand on this IC chip. The components were mounted on a chip due to which the speed of the third generation was relatively high.


Features of Fourth Generation:



  • IC Technology (VLSI) was used in this. Very Large Scale Integration. 10000 to 20000 Elements were installed on this chip.
  • They used to work at very high speed from the third generation.
  • They were very small in size.
  • This computer was very reliable.
  • In this high level language was used for programming.
  • We could easily move them from one place to another.
  • In this, magnetic disks were used as memory.
  • They use electricity very rarely.
  • They were easy to maintain and easy to operate.


 Fifth Generation (1989 to present): - The fifth generation of computers has been considered since 1989. Modern technology of IC was being used in this generation. This IC technology was ULSI, its full name is Ultra Large Scale Integration. More than one million components on this IC chip. Chip, due to which their speed was much higher than the fourth generation. .


Features of Fifth Generation:



  • IC Technology (ULSI) was used in this. Ultra Large Scale Integration. More than 100 million Elements are installed on this chip.


  • They worked at a much faster pace than the fourth generation.
  • They were very small in size. Which we can run by keeping it on the dock and palm.
  • This computer was very reliable.
  • In this, high label language is used for programming which is more simple. The GUI Interface is used in these languages.
  • We could easily move them from one place to another.
  • In this, magnetic disk and chip were used as memory. Such as pen dive.
  • They use electricity very rarely.
  • They were easy to maintain and easy to operate.

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