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1st To 5th Generation Computers-Features of 1st to 5th computer generation

                                  First Generation (1941-1956)
World War gave rise to numerous developments and started off the computer age. Electronic Numerical Integrator and Computer (ENIAC) was produced by a partnership between University of Pennsylvania and the US government. It consisted of 18,000 vacuum tubes and 7000 resistors. It was developed by John Presper Eckert and John W. Mauchly and was a general purpose computer. "Von Neumann designed the Electronic Discrete Variable Automatic Computer (EDVAC) in 1945 with a memory to hold both a stored program as well as data." Von Neumann's computer allowed for all the computer functions to be controlled by a single source.
Then in 1951 came the Universal Automatic Computer (UNIVAC I), designed by Remington rand and collectively owned by US census bureau and General Electric. UNIVAC amazingly predicted the winner of 1952, presidential elections, Dwight D. Eisenhower.
In first generation computers, the operating instructions or programs were specifically built for the task for which computer was manufactured. The Machine language was the only way to tell these machines to perform the operations. There was great difficulty to program these computers and more when there were some malfunctions. First Generation computers used Vacuum tubes and magnetic drums (for data storage).


The IBM 650 Magnetic Drum Calculator




                     Second Generation Computers (1956-1963)
The invention of Transistors marked the start of the second generation. These transistors took place of the vacuum tubes used in the first generation computers. First large scale machines were made using these technologies to meet the requirements of atomic energy laboratories. One of the other benefits to the programming group was that the second generation replaced Machine language with the assembly language. Even though complex in itself Assembly language was much easier than the binary code.
Second generation computers also started showing the characteristics of modern day computers with utilities such as printers, disk storage and operating systems. Many financial information was processed using these computers.
In Second Generation computers, the instructions (program) could be stored inside the computer's memory. High-level languages such as COBOL (Common Business-Oriented Language) and FORTRAN (Formula Translator) were used, and they are still used for some applications nowadays.


The IBM 7090

The IBM 7090, announced in 1958, was a transistorized version of the vacuum-tube-logic 709 and the first commercial computer with transistor logic (the first such computing device, according to , was the IBM 608, but that was not a general-purpose stored-program computer).
Grayson Kirk, President of Columbia University (right) and Kenneth M. King, director of the University's new Computer Center, 1963, in the machine room at the IBM 7090 console, "one of the largest computers in existence" at the time. Photo: found in an unattributed newspaper clipping in the Columbiana archive.



The IBM 7090 Console in the Columbia Computer Center machine room, 1966. Pictured: A group of particle physicists who discovered the violation of charge-conjugation invariance in interactions of intermediate strength: Charles Baltay and Lawrence Kirsch of Nevis Lab (back row); Juliet Lee-Franzini of SUNY Stony Brook and team leader Paulo Franzini of Nevis Lab 





Third Generation Computers (1964-1971)
Although transistors were great deal of improvement over the vacuum tubes, they generated heat and damaged the sensitive areas of the computer. The Integrated Circuit(IC) was invented in 1958 by Jack Kilby. It combined electronic components onto a small silicon disc, made from quartz. More advancement made possible the fittings of even more components on a small chip or a semi conductor. Also in third generation computers, the operating systems allowed the machines to run many different applications. These applications were monitored and coordinated by the computer's memory.


The IBM 360/91
Installation of the IBM 360/91 in the Columbia Computer Center machine room in February or March 1969. Photo: AIS archive.


                                   Fourth Generation (1971-Present)
Fourth Generation computers are the modern day computers. The Size started to go down with the improvement in the integrated circuits. Very Large Scale (VLSI) and Ultra Large scale (ULSI) ensured that millions of components could be fit into a small chip. It reduced the size and price of the computers at the same time increasing power, efficiency and reliability. "The Intel 4004 chip, developed in 1971, took the integrated circuit one step further by locating all the components of a computer (central processing unit, memory, and input and output controls) on a minuscule chip."
Due to the reduction of cost and the availability of the computers power at a small place allowed everyday user to benefit. First, the minicomputers which offered users different applications, most famous of these are the word processors and spreadsheets, which could be used by non-technical users. Video game systems like Atari 2600 generated the interest of general populace in the computers.
In 1981, IBM introduced personal computers for home and office use. "The number of personal computers in use more than doubled from 2 million in 1981 to 5.5 million in 1982. Ten years later, 65 million PCs were being used." Computer size kept getting reduced during the years. It went down from Desktop to laptops to Palmtops. Mackintosh introduced Graphic User Interface in which the users don’t have to type instructions but could use Mouse for the purpose.
The continued improvement allowed the networking of computers for the sharing of data. Local Area Networks (LAN) and Wide Area Network (WAN) were potential benefits, in that they could be implemented in corporations and everybody could share data over it. Soon the internet and World Wide Web appeared on the computer scene and fomented the Hi-Tech revolution of 90's.




Desktop Computer.
 














                                      Fifth generation computers

Fifth generation computers are mainly future computers. Of course some modern computers also belong to this generation. The aim of these computers is to develop devices that respond to natural language input and are capable of learning and self-organization. In these computers massive numbers of CPUs are used for more efficient performance. Voice recognition is a special feature in these computers. By using superconductors and parallel processing computer geeks are trying to make artificial intelligence a reality. Quantum computing, molecular and nanotechnology will change the face of computers in the coming years.
http://2.bp.blogspot.com/_Zx0SO3YqO2g/TCGyszmHZsI/AAAAAAAAABU/KmG5Q8kZI88/s1600/robot.jpghttp://library.thinkquest.org/08aug/01795/Website/fourth_generatoin.jpg

27 comments

AfFaN 9 April 2013 at 08:01

very helpful to 8,9&10th classes

Unknown 20 September 2013 at 04:40

Nice post with awesome points! Can’t wait for the next one.

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Bobby Tejane 22 October 2014 at 07:01

great information

samar 4 September 2017 at 00:29

so helpful thanks

ASHU 2 October 2017 at 07:10

wow

TRT Ertugrul By PTV 24 October 2017 at 03:05
This comment has been removed by the author.
TRT Ertugrul By PTV 25 October 2017 at 05:21

Nice help full

pixuffle 10 November 2017 at 04:47

Great article from the 1st to the 5th generations of computers.

Unknown 29 December 2017 at 19:14

Thanks

Unknown 2 January 2018 at 09:33

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Unknown 14 September 2018 at 07:22

Very informative and helpful. Thanks

Unknown

Thanks so helpful

Unknown 9 October 2018 at 01:15

Very helpful

Unknown 8 November 2018 at 06:41

Thanks a lot for the information

Unknown 16 November 2018 at 08:16

Very very helpful

Unknown 16 November 2018 at 08:18

Very very helpful

Unknown 16 November 2018 at 08:18

Very very helpful

SNEHAJHABCA 22 January 2019 at 20:12

Nice post helpful

SNEHAJHABCA 22 January 2019 at 21:41

Nice post helpful

Unknown 7 February 2019 at 04:13

Avay deep soreng

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