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Computer Programs




A computer is nothing but a very dumb machine that has
the ability to perform mathematical operations very rapidly
and very accurately, but it can do nothing without the aid
of a program written by a human being. Moreover, if the
human being writes a program that turns good data into
garbage, the computer will very obediently, and very
rapidly, turn the good data into garbage. It is possible to
write a computer program with one small error in it that
will do that very thing, and in some cases appearing to be
generating good data. It is up to the human programmer to
design a program to achieve the desired results.

A computer program is simply a "recipe" which the
computer will use on the input data to derive the desired
output data. It is similar to the recipe for baking a cake.
The input data is comparable to the ingredients, including
the heat supplied by the oven. The program is comparable to
the recipe instructions to mix, stir, wait, heat, cool, and
all other possible operations on the ingredients. The
output of the computer program can be compared to the final
cake sitting on the counter ready to be cut and served. A
computer program then is composed of two parts, the data
upon which the program operates, and the program that
operates on the data. The data and program are inseparable
as implied by the last sentence.



1 blog comments below

Very Nice... Very Happy
PokharaSoft on Fri May 30, 2008 9:23 am



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