Computer Generations

 

Computer Generations :

1^st Generation of Computer:

1.               Eckert & Mauchly developed the first electronic computer ENIAC in 1946 in USA.

2.               Vacuum Tube was the Core element in 1^st generation computer.

3.               The time provide of 1^st generation of computer was from 1946-1959.

4.               Punched-core & paper tape secondary storage.

5.               Limited interval storage capacity & slow input/output operation.

6.               It not portable.

7.               Consumes lot of electricity.

8.               Machine code used for as programming language.

 

1^st Generation Developed Computer Names:

1.       ENIAC (Electronic Numerical Integrator and Computer)

2.       EDVAC(Electronic Discrete Variable Automatic Computer)

3.       EDSAC (Electronic Delay Storage Automatic Calculator)

4.       UNIVAC-I (Universal Automatic Computer )

 

2^nd Generation of Computer:

1.               The second generation computers are IBM-700, ATLAS & KL 1901.

2.               Transistor was the core element in 2^nd generation of computer.

3.               The time period of 2^nd generation of computer was from 1959 to 1965.

4.               Tapes and magnetic disk was used for secondary storage.

5.               High level procedural languages FORTRAN & COBAL were used.

6.               Required less power to operate.

7.               Smaller reliable & faster than 1^st generation of computer.

8.               Magnetic Core was used for primary storage.

3^rd Generations of Computer:

1.               The third generation Computers are IBM/360, NCR 395 , TDC-316 developed by Jack Kilby.

2.               Integrated circuits (ICs) was the core element in third generation of computer.

3.               The time period of 3^rd generation of Computer was from 1965-1971.

4.               Magnetic Disk was used for secondary storage.

5.               Development of Minicomputers are start from 3^rd generation.

6.               In this generation Operating system was developed , which are (Real time operating system) &         (Multiprogramming Operating system.)

7.               Smaller then second generation.

8.               High level programming languages like FORTRAN –II to IV, COBOL, PASCAL PL1, PLGOL-        68 are used for making 3^rd generation.

 

4^th Generations of Computers:

       The fourth generation Computers are DEC10, STAR 1000 etc.

      Large Scale integrated circuits LSICs & VLSICs are Core elements of 4^th generation Computers.

     The time period of 4^th generation Computers was from 1971 to 1985.

      Semiconductor was used for primary storage.

     Developments of Microcomputer or PC was start from 4^th generation. 

     In this generation Microprocessor was used.

     High level programming languages like C, C++ & DBMS are used in this this generation.

     Application development by users with user friendly.

 

 

5^th Generation of Computers:

1.               5^th generation is called Future Generation of Computers.

2.               The fifth generation Computers are Desktop, Laptop, Palmtop etc.

3.               Ultra large scale Integration ULSI is the Core element of 5^th generation.

4.               The time period of 5^th generation is 1985 to till today.

5.               RAM & ROM is used for primary storage.

6.               HDD & SDD is used for secondary storage.

7.               All programming languages like C, C++, JAVA, PYTON, .NET, etc included.

Devices:

______________________The End___________________

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