Generation of Computer

 The First Generation

• Eniac (Electronic numerical integrator and calculator) was the first geneation of computer
• Vaccum tubs was the core element in 1st generation computer
• Eniac used for around 1800 vacuum tubes
• The time period of 1st Generation of computer was from 1946 to 1958 
• Punched card and paper tape was secondary storage
• Machine code used for as a programming language
• Need Ac
• Some computers of this geneation were -

1. Edvac
2. Univac
3. Ibm -701
4. Ibm - 650

The Second Generation

• Transistors was the core element in 2nd generation computer
• The period of second Generation was from 1959 - 1964
• Magnetic tape and magnetic disks as secondary devices
• Supported machine code and assembly language like fortan , cobol were used
• Need Ac
• Some computers of this generation were -

1. Ibm - 1620
2. Ibm - 7094
3. Cdc - 1604
4. Cdc - 3600
5. Univac 1108

The Third Generation

• The Period of third generation was from 1965-1971
• Integrated circuits was the core element in 3rd Generation computer 
• The Ic was invented by jack kilby
• Supported high-level language (fortan ii to iv , cobel, pascal pi, i, bascic algol-68 etc.)
• Some computers of this generation were -

1. Ibm - 360 series
2. Honywell - 600 series
3. Pdp ( Personal data processor)
4. Ibm - 370/168
5. Tdc - 316

The Forth Generation 

• The Period of 4th Generation was from 1975 - Present
• Microprocessor was the core element in 4th Generation Computer
• All the high-level languages like c,  c++, d base etc. were used in this generation.

The Fifth Generation

• The fifth Generation computer will be able to think and make decisons.
• Artificial intelligence will the core element in 5th Generation computer
• They will use language like lisp and prolog
• This computer will not do just data processing but knowledge processing.