What Is an Algorithm ??

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Ø 
Consider how you use a computer in a typical day. For example, you start working on a report, and once you have completed a paragraph, you perform a spell check. You open up a spreadsheet application to do some financial projections to see if you can afford a new car loan. You use a web browser to search online for the kind of car you want to buy.
Ø  You may not think about this very consciously, but all of these operations performed by your computer consist of algorithms. An algorithm is a well-defined procedure that allows a computer to solve a problem. Another way to describe an algorithm is a sequence of unambiguous instructions. The use of the term 'unambiguous' indicates that there is no room for subjective interpretation. Every time you ask your computer to carry out the same algorithm, it will do it in exactly the same manner with the exact same result.
Ø  Consider the earlier examples again. Spell checking uses algorithms. Financial calculations use algorithms. A search engine uses algorithms. In fact, it is difficult to think of a task performed by your computer that does not use algorithms.

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