Friday, November 15, 2013

The Basics of Computers

1) Introduction A computer is a tool and teammate in all(prenominal) sphere of human life and activity. Computers are convey umteen changes in industry, government, education, medicine, scientific research, law, social service and even arts like music, movies and paintings. The areas of application of computers are confined exactly by the limitation on creativity and imagination. 1.1) Definition A computer is an electronic political machine, adequate of performing basic operations like addition, subtraction, coevals, grade and so forth The computer is overly capable of storing information, which hind end be utilise posterior. It can do work millions of instructions in a fewer seconds and at the resembling time with high accuracy. Hence a computer can be defined as an reflexive electronic machine for performing calculations or controlling operations that are expressible in numerical or perspicuous terms. 2) History 2.1) 2500 BC - The Abacus Abacus is the first kno wn calculating machine employ for counting. It is do of form strung on cords and is utilise for unprejudiced arithmetic calculations. The cords correspond to positions of decimal fleshs. The form make for digits. Numbers are represented by beads sozzled to the crossbar. Abacus was mainly used for addition and subtraction and later for division and multiplication. 2.
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2) 1614 AD - Napiers Bones The Napiers Bones was invented by John Napier, a Scottish mathematician as an aid to multiplication. A set of tomfool up consisted of nine rods, one for each digit 1 through with(predicate) 9 and a constant rod for th e digit 0. A rod is similar to one column of! a multiplication table. 2.3) 1633 AD - The Slide Rule The slide restrain was invented by William Oughtred. It is establish on the principle that actual duration from the starting specify of the rule is directly proportional to the log of the numbers printed on the rule. The... If you want to get a all-embracing essay, order it on our website: BestEssayCheap.com

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