Presentation 130728012903 Phpapp02

8/12/2019 Presentation 130728012903 Phpapp02

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PRESENTATIONONCOMPUTERGENERATION


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COMPUTERGENERATION

Computer has become a part of our life. Today along with calculations,their work area is very wide-supermarket scaneners scan and calculateour grocery bill and also keep store inventory, automatic tellermachines (atms) help us in banking transaction.

How the technology has developed and what its future course is. Tounderstand this first we should know about the different generation ofcomputers.


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FIRST-GENERATION COMPUTER(1945-1956)

First-generation computers used vacuum tubes and values as their

basic electronic component. They were extremely large in size andreliable. The language used for storing and processing data wasmachine language.

Some of the first-generation computers are:

ENIAC (electronic numerical integrator and calculator) it was built in1946 at the university of PENNSYLVANIA, U S A by JOHN ECKERTand JOHN MAUCHLY.

EDVAC (electronic discrete variable automatic computer) developedin 1950

EDSAC (electronic delay storage automatic computer) it wasdeveloped by MV WILIKES at Cambridge University in 1949

Univac-I - The Universal Automatic Computer was USAS firstcommercially available computer system. It was delivered in 1951 bythe ECKERT-MAUCHLY computer corp.


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DISADVANTAGEThe disadvantages of the first-generation computers are:

1. They were too bulky.

2. They emitted large amounts of heat because they used lots of vacuum tubes3. AIR conditioning was required.4. They were prone to frequent failure thats why they were unreliable.5. They were not portable.


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SECOND-GENERATION COMPUTERS(1956-1963)

In the generation of computers, transistors were used in place ofvacuum tubes.

Transistors are more compact than vacuum tubes as they are made upof semiconductors. They are also more durable than vacuum tubes.

Programming languages some of the computers of the secondgeneration are:

IBM 1620Its size was used smaller as compared to the first-generation computersand it was used mostly for scientific purpose.

IBM 1401-IT was used for was business application.

CDC 3600-IT was used for scientific purpose.


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ADVANTAGESThe advantages that the second-generation computers had over the

generation computers are:

They were smaller as compared to first-generation computers.They generated less heat.They took comparatively less computers time.They were less prone to failure.

DISADVANTAGESThe disadvantages that second generation computer had over the first

generation commuter are:

They required Air Conditioning.Frequent maintenance was required.They were difficult and quite expensive


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THIRD GENERATION COMPUTER(1964 1971)

In the third generation of computers integrated circuits (ICs) began to

be used. These ICs were called chips.

These ICs are more compact than a transistor. Single ICs has manytransistors, registers and capacitors, placed on a single thin of silicon.So the computer built of such components became smaller.Some of the computers developed during this period were :

IBM- 360- Developed by IBM in 1964. PDP 8 -Developed by DEC in 1965. PDP- 11 - Developed by DEC IN 1970. CRA 1 - Developed by CRAY research in 1974. VAX - Developed by DEC 1978.
http://en.wikipedia.org/wiki/Image:Transistor-photo.JPG


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HIGHT-LEVEL language such as BASIC (Beginners all-purpose symbolicinstruction code) were developed during this period.

ADVANTAGESTHE advantages that the third-generated computers had over the second-generation computers were:

1.They were smaller in size as compared to the second-generation computers.2. They generated less heat.3. They reduced computational time.4. They involved low maintenance cost.5. They were easily portable.6. They were comparatively cheaper.
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Fourth-generation computers used very large integration (VLSI)technology. After the induction of integrated circuits, computers couldonly get small in size, since hundreds of computers could fit onto onechip. By the 1890s, the use of VLSI technology had squeezed hundredsof thousands of computers onto a single chip. Ultra-large scale

integration (ULSI) increased that number to millions. This also helpeddecrease the price of computers are IBM-PC, Apple macintosh, sunSPARC station etc.

FOURTH GENERATION COMPUTER(1971 ONWARDS)


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ADVANTAGES

THEY ADVANTAGES OF FOURTH GENERATION COMPUTERS

OVER THIRD-GENERATION COMPUTERS ARE:

They were cheaper.They had a larger memory and high functional speed.They consumed less power.They generated a negligible amount of heat.
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Is classified as fourth generation computers.faster, more powerful, tremendous data storage and processingcapacityNew brands and models would come out the market almost every othermonth.Many clones or imitations of the IBM have become even more powerful

and a lot cheaper.Computers became more affordableComputers can now be found in homes, schools, offices etc.There has been a tremendous improvement in software technologyDifferent software applications to choose from: word processing,spreadsheets, database management, games and entertainment.

Computer subjects are now being offered not just to college studentsbut even to high school and elementary.Computers are now used as an aid in teaching math, science etc.

TODAYS COMPUTER


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Presented By -

Jayesh ModiSTUDENT OF GUJARATI INNOVATIVECOLLEGE INDORE MP

Presentation 130728012903 Phpapp02

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