Science has given many useful things to mankind.Electricity and electrical appliances are also precious among them.Electricity is a power source of energy produced by battery or a coil of wires.The wonders of electricity can be seen on all sides.Chief among them is electric light,fans, television etc.The use of electricity is growing day by day.Every house can feel the absence of electricity.Electricity is a good means of communication.
It sends messages easily between two countries.aA a result of telegraph,we have telegrams and Cablegrams which are useful to our modern life.The service of electricity is indispensable.We live in the age of electricity.It works in every walk of life.
One of the great inventions is television.It is one of the greatest gifts of science.In short period it became more popular.There are several channels and many programs can be telecasted in those channels.It has became the cheapest and most popular medium of education, instruction and entertainment.There are news,views,plays,films, music , magic shows, cartoon films, sports, religious programs etc. A message or news given on TV reaches million of people instantly .The lessons taught on TV are very interesting as they combine the sight and sound .TV has taken education and learning to the door steps of the people.TV should be viewed for a limited period and wisely .It is a good servant also a bad master.
Computer is an electric calculating machine.It works more or less like human brain but more quickly. There are no chances of error if we operate it carefully.In the beginning it was simply a calculating machine doing addition , subtraction, division and multiplication etc. But now it helps in many ways. Now computer is used for predicting weather, finding out the diseases and its treatments,in getting our seats and berths reserved in train and finding out various dates and information in factories,banks ,LIC offices etc.It helps in educational institutions also for checking progress of students.It also works in the field of astronomy. In using computer we have to feed it with data and programmes. Then it gives us the answers and information required.So its feeding or programme is the most useful and important work because the reliability of our results depends upon our programme.So far feeding ,a computer specialist is needed .Then any man can handle it. In foreign countries like Russia, America and Japan many heavy electronic computers have been discovered . They will control and transport , trade , election and security arrangements.In India also we have started the use and manufacture of computers.
