Now a day’s computer is omnipresent. Digitization is touching our lives in almost all spheres. From schools to colleges to banks to post offices to professional world et al people work on computers. Now a day’s even lectures are being given with the help of PPT’s. Biggest example is I am teaching this course online and recipients will be accessing it and using it online.
The computer is the most wonderful gift of science to the modern man. The computer can do all the works of man. Thus, after the invention of computer, the gap between man and machine has been bridged up.
The dictionary meaning of the word "Computer" is an electronic calculating machine. It is derived from the word compute which means to reckon. But the function of the computer has expanded beyond the act of reckoning. Though a machine, it contains and provides innumerable information's and artificial intelligence of a very high order. It may seem strange, but it is true that the memory and intelligence of a computer can surpass those of a living human being.
The mechanism of the computer is very simple. Information processing is the essence of computing. It is a data based machine. The data is fed into the machine. The machine is manipulated and then the due information is retrieved.
Computer was invented due to the pressures of World War-II which witnessed the use of such sophisticated weapons as night bombers, submarines, and long range guns on ships and tanks, etc. The defenders have to fight back by shooting at targets and those targets of the enemy can be located by radar.
Radar can inform not only about the location of the enemy but also about the direction and the speed of the enemy weapons. Detailed mathematical calculations are necessary to find out these things accurately. Firing tables are required by the front line soldiers. Thus the necessity of calculations of firing tables led to the invention of computers. Only computer could produce such firing tables with the required speed and accuracy.
High sums of money, and brain power were combined to produce the technology. ENIAC was the first computer produced by the Moore School of Engineering on behalf of the U.S. Army in 1946. ENIAC was able to produce the firing tables by carrying out the huge number of calculations accurately.
Computers today are used to forecast the weather, to operate machines, to cut shapes out of sheet metal and even to guide spacecraft to the moon. Computers are necessary in printing book and news papers, in diagnosing disease, in looking of obscure documents in archives and elusive criminals etc. Travel agents all round the world can know whether a seat or a bed will be available in an aero plane or in hotel, either today or a year from now. Companies use them for accounting, invoicing, stock control and pay rolls. Computer helps greatly in medical science, particularly in surgery and pathology.
As we all know that to have a robust and beautiful house, good foundation is very important. Similarly there are various subjects these days for which if somebody does not have computer knowledge they might face difficulty in those subjects. And in today’s competitive world, one need be updated with technology which is critical in studying, teaching and in professional world. Having its knowledge will certainly give a competitive edge.
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