1. Education:- Today education is main application of computers. Almost all courses are covered through computers. Coaching of all competitions is being provided through computers. Computer courses are offered at all levels of education. They are used in schools and colleges to impart knowledge to student in a highly scientific and practical manner. Through Computer Assisted Instruction (CAI) a student is guided by the computer in learning the topics of his own choice. In this some instructional information and questions are given by the computer and student is to give answer of these questions according to the given instruction.
2. Medicine:- Doctors are using computers for many purposes. Computer can be used to improve the qualitu of Doctor to diagnose and to conduct research. Computer are used for monitoring heart beat, blood pressure etc. Computer-Aided-Tomography (CAT) scanner is not only limited to scan the brain but it is also used to scan cells in the heart by which the heart surgery is done. It can also be used to diagnose the drug addiction. They can be used for tracing the diseases as well as for other works such as maintenance of room, calculation of hospital payrolls, medical fees of the patients. Even the case history of a patient can also be stored. Everyday so may discoveries are coming up and the credit for it goes to computers only. Now even chemists are using computers for keeping track of medicine's availability with date of expiry and price etc.
3. Law and Order:- The work of lawers has become easier with the use of computer. Lawers have to maintain the record of thier clients according to their required classification. Now instead of keeping the records in books and files they can store large volume of judicial proceedings in the secondary memory of computer which can be easily and directly accessed as and when required. They can have the details of various judgements stored on computer. Police department and investigation departments are also taking help of computers to keep track of criminals. Minute details about thier physical features, finger prints are traced down through computers.
4. Banks:- Banks are among the first large organisation to invest heavily on computer. With the expansion of banks a huge labour force would be needed to tackle today's massive volume of book keeping. In most instance the computer is located centrally. Branches are equipped with terminals, giving then on-line accounting facility and enabling them to use the central system for information on such things as current balances, deposits, over-drafts, interest charges. Cheques are also handled by computers. Use of computers in banks has made the things simple, easier and faster for bankers as well as customers.
5. Transport and Communication:- Next important application of computers is transport and communication. These days railway booking, air reservation is done with the help of computers. It also helps into prevent overcrowding, traffic jams. Ships and arroplanes use computers for navigation. The computer is used to find out the location of ship or aircraft and in which direction in should travel. Rockets and spacecrafts are connected with very powerful computers on board. These computers can do enormous calculation in seconds.
Computer network is also possible by connecting a number of computer terminals together. Any computer can communicate and share the data with other computers. Computer at long distances are connected through telecommunications and satellite links. Computer networks are being used in Electronic-Mail, Telecommunitions. Electronic Funds Transfer Systems. These days computers are used as FAX also.
6. Hotels:- The range of computer application available to hotels is wide. In hotels the computer application include office accounting such as purchase ledger, pay roll, stock control, room reservation and gudt accounts. Guest account may include room and meal charges, drinks charges and purchases etc. The following printed documents are provided by the syste.:
1. Bill for each guest at check-out including service charges.
2. List of rooms to be vacated following morning.
3. Analysis of days business including payment received.
4. List of guest who have not checked out when expected.
7. Meteorology:- Meteorology as a science is relatively new and with computer assistance it has become more of an exact science. The problem in meteorology has always been to obtain sufficient data and to analyze that data quickly enough so that prediction can be made.
8. Offices:- Computers are used to manage and maintain the different information needed for running the organisation. Package called as "OFFICE AUTOMATION" have been developed to describe the use of computer in office. Documents such as circulars and letters can be efficiently prepared by a computer using word processing programs.
9. Commerce/Design:- Business organisation use computer for preparing salary, inventory control of goods and sale analysis for a period of time etc. It is used for preparing design of electronic circuits, ships, aircraft and even of buildings. These designs are displayed on the screen. An engineer can made changes and modification easily. Computers are also useful for manufacturing units. In this functioning of machines are fed into with fixed instruction to work.
10. Desktop publishing (DTP):- Editing of books, magazines and papers can be easily done on the screen without any paper cutting and pasting. A user can determine the style and size of characters and graphical images can be mixed with the text. Today DTP has become a very popular medium for writing of books, designing of visiting cards and newspaper etc.
11. Animation and Graphics:- Animation is the process of making an object apear to move. This aim is achieved by rapid displaying of series of similar pictureseach in a slightly different position. Computers can be used for animation and for producing special effects in movies. The result of computer animation can now be seen on television. A number of video games have been developed with the help of computers for example---Jungle book cartoon etc. These days dredd designers and even hair dressers are using animation for combining their design on the person for which they are designing this.
12. Computers in Government Offices:- The Government uses computers to receive up-to-date information for quick decision. Computers are of great help in processing information collected by Census Departmenta. Most of the Government operations are connected through networking computers from which any query can be answered with the help of computers. Thus the government saves a lot of time and money. Now even the identity cards for elections have been prepared by using the computer. Electronic voting machine (EVM) and the election results, collection of taxes, payment of salaries, driving licensee and motor vehicle registration means everything is done by computers.
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