Computer is an electronic device used in almost every field even where it is most unexpected. That is why this age is called as the era of IT. And now we cannot imagine a world without computers. It is made up of two things one is the hardware and other is software. All physical components of computer like keyboard, mouse, monitor etc comes under the hardware whereas all the programs and languages used by the computer are called software. These days computers are the tools for not only engineers and scientists but also they are being used by millions of people around the world.
Computer has become very important nowadays because it is very much accurate, fast and can accomplish many tasks easily. Otherwise to complete those tasks manually much more time is required. It can do very big calculations in just a fraction of a second. Moreover it can store huge amount of data in it. We also get information on different aspects using internet on our computer.
In mid nineteenâ€™s computers were only used by the government and army because at that time using computer was a complicated task. When the microprocessor was invented computer gets smaller in size but after DOS and unix it became very easy for the people to use computer. Computer in different fields:-
Almost every bank is using computers to keep the record of all the money transaction and other calculations. Moreover it provides speed, convenience and security.
Communication is another important aspect of computer and has become very easy through internet and email. Computer communicates using telephone lines and modems. Through email we can send messages to anybody in any part of the world in just a second while if we write letter then it will reach in some days. So the internet has made the earth a global village and above all saves time. This would not be possible without computers. Internet helps to find information on every topic. It is the easiest and fastest way of research. Computer network makes the user capable of accessing remote programs and databases of same or different organizations.
Computer has now become an integral part of corporate life. They can do business transactions very easily and accurately and keep the record of all the profit and loss. Today computers can be found in every store, supermarkets, restaurants, offices etc. special software is used in these computers to calculate the huge bills within seconds. One can buy and sell things online, bills and taxes can be paid online and can also predict the future of business using artificial intelligence software. It also plays a very important role in the stock markets.
Diseases can be easily diagnosed with the help of computer and can also know about its cure. Many machines use computer which allows the doctor to view the different organs of our body like lungs, heart, kidneys etc. There is special software which helps the doctor during the surgery.
Today computer has become an important part of oneâ€™s education because we are using computers in every field and without the knowledge of computer we cannot get job and perform well in it. So computers can secure better jobs prospects. Knowledge about computer is must in this time.
Almost every type of editing and audio- visual compositions can be made by using special software especially made for this purpose. Some software can even make three dimensional figures which are mostly used in the cartoon films. Special effects for action and science fiction movies are also created on computer.
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Computers do all the work of plane and train reservation. It shows the data for vacant and reserved seats and also saves the record for reservation.
Weather predictions are also possible by the experts using supercomputers.
It is also used for umpiring decisions. Many times the umpire has to go for the decision of third umpire in which the recording is seen again on the computer and finally reaches to the accurate and fair decision. Simulation software allows the sportsman to practice and improve his skills.
We operate washing machines, microwave oven and many other products using software. Moreover we can store all the information about our important work, appointments schedules and list of contacts.
So we can say that today computer is playing very important role in our lives. Now is the time when we cannot imagine the world without computers. And this technology is advancing both in industry and home. It has become necessary for everyone to have the basic knowledge about computer. Otherwise he cannot get a job as computers have invaded almost all the fields.