Saturday, August 6, 2011

Computer

Computer is the most wonderful contribution of modern sicence. It is an ultra-dodern electronic device of modern technology.But it has no ability to don anything by itself. It works on the basis of commands given by th operator. It can solved many complicated problem within a short time.
Invention: 
Computer is invented by the hard word of many scientists.Charles Bavez is called the father of modern computer . he invented the structure of computer at first in 1833.His invented computer had five parts. These were Store, Maill,control, Input and output.By following the structure of computer combined invented the modern, electronic computer in 1944 After this, it has been rapidly modified and many other computers have been invented.                                   
computer, is the most wonderful, contribution, of modern sicence, ultra-dodern,wimax, modern,electronic computer,Computer has made, a great change, in education,
Classification:                                                           
At present many kinds of computer have invented. Each of the specials systems is called 'generation' Now-a-days, fourth generation compute is being used.By this time, we have got UNIVAC-1: 1 .C.L- 2900 ; B.M - 640; ADSAC-205 Computers are active in the market.
Working System :
A Computer performs three functions. It receives data, processes it and at  last emits the input of the computer. It is called programmer, The computer does not work in our language. So the programmer is to puit in its own language. This programmer is typed and produced in the tele-type unit of the information input. The output prints the results with the help of the printing machine. It's sing goes to the memory and the control unit reads them and sends them to the output unit.Being informed the control unit makes single  to send them to the arithmetic unit  After finishing its tasks it send them to the result output. Thus result is emitted by Computer.

Usefulness:

  1. Computer  is very useful to us. It is used in our daily life for various purposes.
  2. (1) In education: 
  3. Computer has made a great change in education. The students of developed countries use computer to prepar their study materials. The result of various exminations is prepared accurately by computer within a short time. Bsedes, printing thousands of books within a short time, computer contribute a lot in education.
  4. (2) In medical :
  5. At present computer is used to diagnose disease. A new process of  operation is invented by computer as an alternative of surgery Beside this computer is used to grind stones normal pathological test.(
  6. (3) In commerce:
  7. Now-a-days, computer is used to prepare document and budget and to store information. The price of currency and price of any share can be known instantly by computer.
  8. (4 In Industrial Sector :
  9. At present , computer is used to run mills, factories and industry in developed countries. Care, trains and plantes are also run by the ccomputer.
  10. The computer is a blessing of modern science. We cannot go a single moent without it. It lessen our wouks and makes our lives easy and simple. But it has not been fully introduced in Bangladesh. So we should use it all over Bangladesh.

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