Mobile Phone Is One Of The Wonderful Wonders Of Science

Since the dawn of civilization,science has progressed to the present position step by step.Science has recently made rapid strides.It has conquered every sphere of life with its blessing as well as with its curse.We have invented and discovered many wonderful wonders with the help of science and technology.Mobile phone is one of the wonderful wonders of science. It has added a new dimension to our life and to communication system.It is a telephone system that works without any wire.It can be moved easily and quickly from place to place.Through mobile phone,we can send messages to distant places,play games and sports,know about time,solve the work of calculation,be aware of different kinds of news and views.At present the popularity of the mobile phone is increasing.Many companies are also being set up for selling mobile phone.The price of mobile phone is also decreasing in compares with the past.People are being encouraged to buy a mobile phone set at a cheaper rate.However with the touch of science and technology,the whole world seems to be a global village.In a very single moment,we can communicate with the people living in a very distant place.With all its advantages,the mobile phone has still some drawbacks in disguise.Though the price of it is decreasing,per minute bill is not decreasing.So everybody cannot possess it.Scientists have recently discovered that mobile phone can causes cancer to the user.Besides,it has become a fashion with the young people.Last but not the least,terrorists are using it to spread out terrorism all around the world.But in spite of all these disadvantages,it can be finalised here that the necessity of a mobile phone in exchanging messages,cannot be denied in the true sense of the term in our practical life.

Computer-The Great Invention Of Science

 The world is moving fast with the advertisement of science and technology.Computer is a wonder of modern science and technology.Charles Babbage,Professor of Mathematics,thought of this computer in the 1830.But Professor Howard Aiken invented the first mechanical computer in 1944.After that electronic computer were invented.Now computer is changing almost everyday.

There are two kinds of computer.These are mode based and Mathematical based.The mode based are  analogue computer.In the past it was used for single purpose.The next generation of computers is mathematically based.Beside there are Digital computer,Hybrid computer and super computer.

The components of computer are CPU,Key-board and mouse,monitor,printer or output device.The three parts of CPU or Central processing Unit are memory,arithmetic logic and controlling unit.The key-board resembles the traditional key-board or type-writer.There are other function keys F1 to f12 and numeric akin to a calculator key-pad.

The computer has revolutionized printing,banking and other industrial work.One can put ten years of file which can fill 20 cabinets in a small disk.

It can compose books,newspaper and reports in a great speed.It can play chess and even can play on musical instruments.Nowadays,traffic is also controlled with the help of computers.Bangladesh has stepped into the era of computers.She has entered into Internet.The world of information has come to our homes.We all should learn how to operate computer as the modern world is the age of computer.