write a composition on computer for class ssc jsc 2021

write a composition on computer

COMPUTER

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                                                            COMPUTER TODAY

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THE IMPORTANTCE OF COMPUTER EDUCATION  

Introduction: Computer is the latest and most wonderful contribution of modern science. It is an ultra –modern electronic device of modern technology. But it has no ability to do anything by itself. It works on the basis of commands given by operator. It can solve many complicated problems within a short time.

Invention: Charles Bavez is called the father of father of modern computer. He invented the structure of Computer at first 1833. His invented computer had five parts. These were store, Mill, Control, Input and Output. But the credit for the invention of modern computer goes to American scientist, Mr. Howard Akin. Later on, Harvard University and I B.M. Company combinedly invented the modern electric computer in 1944. After this, it has been rapidly modified and finally with the invention of microprocessor in 1971, the size of computer became smaller.

Classification of computer: Computers are of three kinds. These are Analogue, Digital and Hybrid computers. Nowadays, computer means a digital computer. Each of the special systems is called generation. At present, fourth generation computer is being used. Only I.C. (Integrate Circuit) computers are active in the present market.

Functions and major components of computer: A computer performs three functions. It receives data, processes it and at last emits it. It consists of five components- the input unit, the output unit, the memory unit, the control unit and the arithmetic unit.

Working system: At first the details of work is put into the input of computer. It is called programme.  The computer does not work in our village. So the programme is put in its own machine language. This programmed is typed and produced in tele-type unit of the information input. The output prints the results with the help of the printing machine. Its signal goes to the memory and the control unit reads them and sends them to the output unit. Being information, the control unit makes signals to send them to the arithmetic unit. After finishing its tasks, it sends them to the result output. Thus result is emitted by computer.

Usefulness: Computer is very useful to us. It is used in our daily life for various purposes.

(1) In education: Computer has made a great change in education. The students of developed countries use computer use computer to prepare their study materials. The result of various examinations is prepared accurately by computer within a short time.

(2) In Medical science: At present computer is used to diagnose disease. A new process of operation is invented which performed by computer as an alternative of surgery. Besides this, computer is used to grind stones in normal pathological test.

(3) In commerce: Nowadays, 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.

(4) In industrial sector: At present, computer is used to run mills, factories and industries in developed countries. In dangerous and risky industrial fields computer is being used in place of humans.

(5) In communication: It is computer that has made possible automatic tele-communication through STD. It has facilitated internet and e-mail. It is also used to fly planes.

(6) Others uses of computers: Besides these, computer calculations sums correctly. It is also being used in agriculture sector in developed countries. Moreover, It is helping in conquering space.

Demerits: Inspite of having uncounted merits of computer, it has also demerits. It causes diseases like restitutive stress injury and it weakens the eye –sight of the operator.

Computer in Bangladesh: Use of computer began in Bangladesh in the 1960’s and assumed wider dimension in the nineties. Many Govt. and non-govt. offices, educational institutions etc. are using computers. A course on computer has been introduced in the secondary and higher secondary level. However, the day is not so far when computers will be used in every sphere of life in Bangladesh.

Conclusion: The computer is a blessing of modern science. We cannot go a single moment without it. It lessons our works and makes our lives easy and simple. Today there is hardly any field where computer is not being used. Now it is upon us to make the best use of it.