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MINISTRY OF EDUCATION AND SCIENCE OF UKRAINE

National Aviation University

Report: ”Generations of computers”

Performed by:

Ivan Savaryn

Group 141:1

ICSIT

Checked by: S.Soroka

Senior Lecturer

Kyiv - 2014

Content

Introdution

1. First generation

2. Second generation

3. Third generation

4. Fourth generation

5. Continuation of fouth generation and maybe fifth generation

Introdution

Generation in computer terminology is a change in technology a computer is/was being used. Initially, the generation term was used to distinguish between varying hardware technologies. But nowadays, generation includes both hardware and software, which together make up an entire computer system.

There are totally five computer generations known till date. Each generation has been discussed in detail along with their time period and characteristics. Here approximate dates against each generations have been mentioned which are normally accepted.

Following are the main generations of computers

1. First generation

The period of first generation was 1946-1959. The computers of first generation used vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit). These tubes, like electric bulbs, produced a lot of heat and were prone to frequent fusing of the installations, therefore, were very expensive and could be afforded only by very large organisations. In this generation mainly batch processing operating system were used. Punched cards, paper tape, and magnetic tape were used as input and output devices. The computers in this generation used machine code as programming language.

The main features of first generation are:

· Vacuum tube technology

· Unreliable

· Supported machine language only

· Very costly

· Generated lot of heat

· Slow input and output devices

· Huge size

· Need of A.C.

· Non-portable

Some computers of this generation were:

· ENIAC

· EDVAC

· UNIVAC

· IBM-701

· IBM-650

2. Second generation

The period of second generation was 1959-1965. In this generation transistors were used that were cheaper, consumed less power, more compact in size, more reliable and faster than the first generation machines made of vacuum tubes. In this generation, magnetic cores were used as primary memory and magnetic tape and magnetic disks as secondary storage devices. In this generation assembly language and high-level programming languages like FORTRAN, COBOL were used. The computers used batch processing and multiprogramming operating system.

The main features of second generation are:

· Use of transistors

· Reliable in comparison to first generation computers

· Smaller size as compared to first generation computers

· Generated less heat as compared to first generation computers

· Consumed less electricity as compared to first generation computers

· Faster than first generation computers

· Still very costly

· A.C. needed

· Supported machine and assembly languages

Some computers of this generation were:

· IBM 1620

· IBM 7094

· CDC 1604

· CDC 3600

· UNIVAC 1108

3. Third generation

The period of third generation was 1965-1971. The computers of third generation used integrated circuits (IC's) in place of transistors. A single IC has many transistors, resistors and capacitors along with the associated circuitry. The IC was invented by Jack Kilby. This development made computers smaller in size, reliable and efficient. In this generation remote processing, time-sharing, multi-programming operating system were used. High-level languages (FORTRAN-II TO IV, COBOL, PASCAL PL/1, BASIC, ALGOL-68 etc.) were used during this generation. software computer transistor circuit

The main features of third generation are:

· IC used

· More reliable in comparison to previous two generations

· Smaller size

· Generated less heat

· Faster

· Lesser maintenance

· Still costly

· A.C needed

· Consumed lesser electricity

· Supported high-level language

Some computers of this generation were:

· IBM-360 series

· Honeywell-6000 series

· PDP(Personal Data Processor)

· IBM-370/168

· TDC-316

4. Fourth generation

The period of fourth generation was 1971-1980. The computers of fourth generation used Very Large Scale Integrated (VLSI) circuits. VLSI circuits having about 5000 transistors and other circuit elements and their associated circuits on a single chip made it possible to have microcomputers of fourth generation. Fourth generation computers became more powerful, compact, reliable, and affordable. As a result, it gave rise to personal computer (PC) revolution. In this generation time sharing, real time, networks, distributed operating system were used. All the high-level languages like C, C++, DBASE etc., were used in this generation.

The main features of fourth generation are:

· VLSI technology used

· Very cheap

· Portable and reliable

· Use of PC's

· Very small size

· Pipeline processing

· No A.C. needed

· Concept of internet was introduced

· Great developments in the fields of networks

· Computers became easily available

Some computers of this generation were:

· DEC 10

· STAR 1000

· PDP 11

· CRAY-1(Super Computer)

· CRAY-X-MP(Super Computer)

5. Continuation of fouth generation and maybe fifth generation

The period of fifth generation is 1980-till date. In the fifth generation, the VLSI technology became ULSI (Ultra Large Scale Integration) technology, resulting in the production of microprocessor chips having ten million electronic components. This generation is based on parallel processing hardware and AI (Artificial Intelligence) software. AI is an emerging branch in computer science, which interprets means and method of making computers think like human beings. All the high-level languages like C and C++, Java, .Net etc., are used in this generation.

AI includes:

· Robotics

· Neural Networks

· Game Playing

Development of expert systems to make decisions in real life situations.

· Natural language understanding and generation.

Conclusions and recommendations

Computers continue to evolve and maybe in a few years will be the next generation of computers that will be able to all the same thing as people. I think it will help us in future. Our life will be easier. So let hope that it will happen in nearby future

Annotation

У цьому рефераті йдеться мова про покоління комп'ютерів . Розповідається про їх особливості і час існування . Також наведені фотографії моделей комп'ютерів кожного з поколінь.

В этом реферате идет речь о поколениях компьютеров. Рассказывается об их особенностях и времени существования. Также приведены фотографии моделей компьютеров каждого из поколений.

Tthis lecture is about generations of computers. Told about their features and time of being. There are photos of models of computers each generation.

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