Computers in the World

The Latest Invention of New Era 

About Computers:

Hello,guys Today the computer has become an important part of our day-to-day life.It is being use almost in every field.

Let's know and learn how it come into existence.

Computer is a man-made machine which faithfully follows man-given orders and shortly gives man-wanted results.

It has been called 'mechanical brain'.It is the latest wonderful invention of science.

Today it is being used in many fields.

It may be said that the first computer was made by an intelligent young man of France,Blais Pascal in 1642.

He made an instrument with many small wheels.

Scientifically ,the real computer was made by an English Mathematician Charles Babbage in the 19th century.

With the advents of electronics ,the computer made rapid development.

Now its use is at the zenith.

Computer May be called scientific wisdom: It does the same work as is done by human brain.In fact ,it has replaced human mind.

It has relieved man of the boring job of figure work.

It is a magic machine by which countings and information can be received.

Mathematical Computer:

It is used for addition, Subtraction,, multiplication,and division.

The medical computer diagnoses the disease and suggests even the treatment.

At home the computers help the house wife in her household work.

In space programms they help in big and complex calculations.In factories these computers have proved very useful.Now government is using them at railway stations and aerodromes for the reservation of seats.

It is very useful in Post and Telegraph Department.In schools computers can work like teachers and in offices ,like obedient servants.In fact ,there is no field does not bear the stamp of computer.

It's dark side:

Computer has it's dark side also.It does the job of many people quickly and accurately.

Hence it increases unemployment in the country.secondly it increases laziness in man.Man scope of misusing computer.Today computer is easily accessible so children and youth remain glued to it for many hours.They are found wasting their time either by enjoying pornographic sites ,in playing game, watching movie on it or befooling others by giving them false identity to make online friends.

Even many times they become irrational and start living in an illusion.It all spoils youth minds.

 

The Wonders of 21st Century:

Now the use of computer is being increased in the whole country.

It is growing needs of the hour.Today,we are in the 21st century of wonders.The increasing use of the computer will helps us a lot to make progress in every field of activity.

             Generation of Computers

A generation refers to the improvement in the development of a product.It is also used in the different advancement of computer technology.Lets us learn about them now.

First Generation Computers (1937-1953) [Vacuum Tubes]

In this generation , electronic switches were used in the form of vacuum tubes.

The earlier electronic computer was invented by J.V. Atanasoff.The first computer was Electronic Numerical Integrator and Computer (ENIAC),built by J.Presper Eckert and John V.Mauchly After that they began to work on EDVAC.

Second Generation (1954-1962)[Transistor Era]

In this generation, transistor were replaced by vacuum tubes.

The main focus is on computer system design.High level programming languages were introduced and these include FORTRAN ,ALGOL,and COBOL.

Third Generation [1963-1972] (Integrated Circuits Era)

In this generation Integrated Circuit or ICs were used in computer ICs means several transistors built on one physical component Besides it semiconductor memories, microprogramming technique used for designing complex processors and the introduction of operating system and time-sharing.

Fourth Generation [1972-1984] (Large Scale Integration Era)

Large scale integration (1000 devices per chip)and very large scale integration (100,000 devices per chip) were used in this generation.

Whole processors could now fit onto a single chip ,and for simple systems the entire computer could fit on the chip.

Fifth Generation (1984-1990) Parallel processing.

In this generation machines with hundreds of processors that could all be working on different parts of a single program was invented.Computer networks and single user workstation also invented.

Sixth Generation (1990 Onwards)

In this generation micro controllers  technology was invented Micro controller are stored inside some other devices so that they can control the features of the product.They work as small computers inside devices and now serve as essential components in most machines.