The computer

Computer is the most wonderful invention of modern science.It is a machine which is called the substituting of  human  brain.Computer was not invented overnight.charles babez, A british profesor of mathematics first thought about a formula which could help  human  brain.He could not invent computer but he initiated the research leading to the invention of computer.Finally Mr. haward akin,an  american  scientist invented such a machine in 1937 that could do difficult sums.After seven year electric computer was used in harvard university in 1944.    After that many types of computer have been invented.A computer has five major components.They are the input unit,the output unit,the memory unit,the control unit and the arithmetic unit.The first two units consist of  the device that permit a computer to receive  or exhibit.A computer does three functions. It receive data,produces data by various computation and emits data.These functions are accomplished by giving the computer a programm consisting of a sequence of statements.Computer has a great use to us.It has mad our life easy and comfortable.It has lessened our work loads.It has been largely used in the govt.Office,medical science,printing, battlefields educational institutions,agricultural,industrial,and commercial sectors.nowadays it is conquring the space,translating from one language to another language,playing chess and what not.No wonder that the day will come when computer will do every brain work.Computer has some demerits too.It causes diseases like respitutive stress injury.It may defects the eye-sight of the operator if he sits for a long time before its screen.It may be misguided if  VIRUS attacks it.In bangladesh  computer is very popular.Our young generation is talking computer training institutions.Many government and non-government office and educational institutions are using computer widely.Computer is really a blessing to us.We can`t imagine our modern life without computer.We wish computer should be used for human welfare but not destruction.