How Many Generations of Computers are Classified?

Generation of computer
Generation of computer

In the 20th century, electricity was invented. Computers began using electric power this led to the rapid development of computers.

There are Five Generations of Computers

The modern computer evolved generation after generation.

First Generation of Computers (1942 to 1955)

First Generation of Computers
First Generation of Computers

The computers that were developed from 1942 to 1955 were called the first generation computers.

The first generation computers used vacuum tubes.

A vacuum tube consists of a glass bulb and wire.

The wire is used to carry data in the form of electronic signals.

The first generation of computers was very large expensive and required a huge amount of electricity.

The electronic numerical integrator and calculator was a first-generation computer.

In this generation, chiefly execution operational systems were used. during this generation.

  • Punched cards
  • Paper tape 
  • Input & Output devices

There were machine codes and electrical wired board languages used.

The main options of the initial Generation are :
  • Vacuum tube technology
  • Unreliable
  • Supported Machine language solely
  • Very expensive
  • Generates a ton of warmth
  • Slow Input/output device
  • Huge size
  • Need of A.C
Some computers of this generation were:
  1. ENIAC: Electronic Numerical measuring instrument and laptop
  2. EDVAC: Electronic distinct Variable Automatic laptop
  3. UNIVAC: Universal Automatic laptop
  4. IBM701: International Business Machines - 701 and IBM-650

Difference between the first and second-generation computers

Second Generation of computers (1956 to 1964)

Second Generation of computers
Second Generation of computers

The second-generation computers were developed between 1956 and 1964.

The second-generation computers used transistors instead of vacuum tubes as transistors are smaller than vacuum tubes.

In this generation, programming language and high-level program language.

FORTRAN, programing language was used.

There was execution and execution software package used.

The main options of Second Generation area unit :
  • Use of transistors
  • Reliable as compared to initial generation computers
  • Smaller size as compared to initial generation computers
  • Generate less heat as compared to initial generation computers
  • Consumed less electricity as compared to initial generation computers
  • Faster than initial generation computers
  • Still terribly expensive
  • A.C. needed
  • Support machine and assembly languages
Some computers of this generation were:

IBM 1620, IBM 7094, CDC 1604, CDC (Control information Corporation) 3600 and UNIVAC 1108.

Third Generation of computers (1965 to 1975)

third-generation computer

The computers became much smaller in size they also became faster and cheaper in 1965 to 1975 was the period of the third generation computers.

Integrated circuits were introduced during the development of the third generation computers an integrated circuit is as small as a transistor.

But it can work as fast as thousands of them integrated circuits made computers faster cheaper and smaller than the second generation computers.

They used less electricity and made fewer mistakes.

In this generation, the Remote process., Time-sharing, Real-time, Multi-programming software package were used.

High-level language (FORTRAN-II TO IV, COBOL, PASCAL PL/1, BASIC, ALGOL-68, etc.) were used throughout this generation.

The main options of Third Generation are:
  • IC used
  • More reliable
  • Smaller size
  • Generate less heat
  • Faster
  • Lesser maintenance
  • Still expensive
  • A.C. needed
  • Consumed lesser electricity
  • Support application-oriented language
Examples: Some computers of this generation were:

IBM-360 series, Honeywell-6000 series, PDP (Personal information Processor), IBM-370/168
and TDC-316.

Fourth Generation of computers (1975 till date)

The computers developed from 1975 up to the present are called the fourth generation computers.

The fourth-generation computer uses microprocessors a microprocessor consists of a small silicon chip on thousands of circuits are placed.

The fourth-generation computers are smaller portable and cheaper they use less electricity and produce fewer heat computers that are currently being researched and developed.

In this generation, sharing, Real-time, Networks, Distributed software packages were used.

All the upper-level languages like C (programming language) and C++, DBASE, etc., were employed in this generation

The main options of the Fourth Generation are:
  • VLSI technology used
  • Very cheap
  • Portable and reliable
  • Use of PC's
  • Very tiny size
  • Pipeline process
  • No A.C. needed.
  • Concept of the web was introduced
  • Great developments within the fields of networks
  • Computers became simply on the market
Some example computers of this generation were:
  • DEC ten (Digital instrumentation Corporation)
  • STAR one thousand
  • PDP eleven by ten (Digital instrumentation Corporation)
  • CRAY-1 (Super Computer)
  • CRAY-X-MP (Super Computer)

Fifth Generation of computers

fifth-generation computers

The amount of Fifth Generation is a 1980-till date

The fifth-generation computers these computers are the most advanced computers.

The fifth-generation computers in a way that they can think on their own this is called Artificial intelligence.

Robots work on this technology fifth generation computers are made in different sizes.

So that different people can use them for different purposes.

All the upper-level languages like C and C++, Java, .Net, etc., area unit employed in this generation.

The main options of the Fifth Generation are:
  • ULSI technology.
  • Development of true computer science.
  • Development of language process.
  • Advancement in the data processing.
  • Advancement in Superconductor technology.
  • More user-friendly interfaces with transmission options.
  • Availability of terribly powerful and compact computers at cheaper rates.
Some example computers of this generation are: Desktop, Laptop, Notebook, Ultrabook
and the Chrome Book.


Supercomputer and mainframe
Supercomputer and mainframe

Supercomputers are the most complex computer supercomputers are used by people need to process complex and large amounts of data.

Supercomputers are used to solve complex numerical problems to make forecasts and analyze engineering problems.

Mainframe computers

Mainframe computers are large and expensive they have powerful processors and very large memories hundreds of people can work on a mainframe computer at the same time.

Many computers are smaller and cheaper than mainframe computers and have less processing power.

Computers can process large amounts of data unlike mainframe computers fewer people can work on mini-computer microcomputers are the most common computers.

They are used by businesses at schools and at homes, only one person can use them at a time are also called desktop computers.

Computers, laptops, computers are smaller but costlier than desktop computers they are also called notebooks.

They can be operated with a battery and as they are portable.

Mostly used while traveling mobile devices and tablets are smaller than a laptop.

Computers tablets are used to organize information play games and read e-books.

The computer is a microprocessor that is fitted into a device to control its operation.

Embedded computers are installed in smart appliances and automobiles to perform special operations.

Also read: Features of computers

Conclusion: I hope you my dear friends today we know the generations of computers comment below your reviews. and share this article with your friends. Thanks for visit us.

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